Misfire

Cdutch513 · 01-02-2020, 10:00 PM

SOLVED!

one of the DISA valves broke and the flap was sitting in the #1 cylinder runner.

Background on the car:
2010 328i
ESS Supercharger and 3IM.

So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away.
Cool.
Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD).
Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one.
swapped injector. Still cylinder one.
compression test. 1, 2 and 3 all read between 205 and 210.
leak down test passed with flying colors.
cleaned MAF (even though its alpha n)
visually inspected plug wiring and connections, no visible faults.
visually inspected injector connection, no visible faults.
WHAT IS THE PROBLEM?!

TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed.

Please help.

Phil325i · 01-03-2020, 04:08 AM

Time to get your engine read for fault codes...

Cdutch513 · 01-03-2020, 05:14 AM

Quote:

Originally Posted by Phil325i

Time to get your engine read for fault codes...

I don't get it. Why is this step not assumed? I put the code in the post. Does it need to be explicitly stated?
After I got the SES light, I pulled over, went to my trunk, got my scanner, went back to the driver seat, opened the little tab hiding the OBDII port, and plugged the scanner in.

29CD: CYLINDER 1 MISFIRE.

Phil325i · 01-03-2020, 01:00 PM

Apologies, I missed the code in your post.

Sounds a strange one. You've done everything I would have thought of. It might be worth finding an indy who has access to BMW diagnositcs. I had a similar misfire mystery which turned out to be the low pressure fuel pump control unit. But only a full BMW diagnostic identified the fault...

Good luck.

Cdutch513 · 01-03-2020, 01:13 PM

Quote:

Originally Posted by Phil325i

Apologies, I missed the code in your post.

Sounds a strange one. You've done everything I would have thought of. It might be worth finding an indy who has access to BMW diagnositcs. I had a similar misfire mystery which turned out to be the low pressure fuel pump control unit. But only a full BMW diagnostic identified the fault...

Good luck.

Yeah my fault if I came off like an asshole.
I posted to a fb group and I swear every comment was something I said I did in the post.
I got a mechanic buddy with a snap on computer. Gonna try that todat

dwashy · 01-03-2020, 01:46 PM

Quote:

Originally Posted by Cdutch513

Background on the car:
2010 328i
ESS Supercharger and 3IM.

So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away.
Cool.
Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD).
Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one.
swapped injector. Still cylinder one.
compression test. 1, 2 and 3 all read between 205 and 210.
leak down test passed with flying colors.
cleaned MAF (even though its alpha n)
visually inspected plug wiring and connections, no visible faults.
visually inspected injector connection, no visible faults.
WHAT IS THE PROBLEM?!

TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed.

Please help.

Looks like you did all the testing I would have done initially. Pull the plug in cylinder 1 and see if it looks like it's running lean?

Random idea: faulty o2 sensor in that bank that cylinder 1 exhaust feeds into? I'd think this would affect cylinders 1, 2, and 3 though.

I'm really not sure, but hope you get it sorted. Report back if you figure it out! The more info out there on SC'd N52's the better I'd think

Cdutch513 · 01-03-2020, 03:03 PM

Quote:

Originally Posted by dwashy

Quote:

Originally Posted by Cdutch513

Background on the car:
2010 328i
ESS Supercharger and 3IM.

So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away.
Cool.
Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD).
Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one.
swapped injector. Still cylinder one.
compression test. 1, 2 and 3 all read between 205 and 210.
leak down test passed with flying colors.
cleaned MAF (even though its alpha n)
visually inspected plug wiring and connections, no visible faults.
visually inspected injector connection, no visible faults.
WHAT IS THE PROBLEM?!

TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed.

Please help.

Looks like you did all the testing I would have done initially. Pull the plug in cylinder 1 and see if it looks like it's running lean?

Random idea: faulty o2 sensor in that bank that cylinder 1 exhaust feeds into? I'd think this would affect cylinders 1, 2, and 3 though.

I'm really not sure, but hope you get it sorted. Report back if you figure it out! The more info out there on SC'd N52's the better I'd think

So whenever I push it to the point of throwing the ses light, the car vibrates violently as it cylinder one isn't working at all. The exhaust sounds like a Subaru with a pulsating exhaust. The AFR reads 19:1 on my P3 gauge.

rjahl · 01-03-2020, 05:45 PM

Quote:

Originally Posted by Cdutch513

Quote:

Originally Posted by dwashy

Quote:

Originally Posted by Cdutch513

Background on the car:
2010 328i
ESS Supercharger and 3IM.

So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away.
Cool.
Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD).
Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one.
swapped injector. Still cylinder one.
compression test. 1, 2 and 3 all read between 205 and 210.
leak down test passed with flying colors.
cleaned MAF (even though its alpha n)
visually inspected plug wiring and connections, no visible faults.
visually inspected injector connection, no visible faults.
WHAT IS THE PROBLEM?!

TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed.

Please help.

Looks like you did all the testing I would have done initially. Pull the plug in cylinder 1 and see if it looks like it's running lean?

Random idea: faulty o2 sensor in that bank that cylinder 1 exhaust feeds into? I'd think this would affect cylinders 1, 2, and 3 though.

I'm really not sure, but hope you get it sorted. Report back if you figure it out! The more info out there on SC'd N52's the better I'd think

So whenever I push it to the point of throwing the ses light, the car vibrates violently as it cylinder one isn't working at all. The exhaust sounds like a Subaru with a pulsating exhaust. The AFR reads 19:1 on my P3 gauge.

Looks like you know what's happening. Boosted load and an AFR if 19:1. It's going to misfire.

Need to check you fuel pump and fuel pressure at your injectors.

Cdutch513 · 01-03-2020, 05:47 PM

Quote:

Originally Posted by rjahl

Looks like you know what's happening. Boosted load and an AFR if 19:1. It's going to misfire.

Need to check you fuel pump and fuel pressure at your injectors.

It's only 19:1 after the dme shuts off cylinder one due to the misfire

Cdutch513 · 01-03-2020, 06:24 PM

Quote:

Originally Posted by Phil325i

Apologies, I missed the code in your post.

Sounds a strange one. You've done everything I would have thought of. It might be worth finding an indy who has access to BMW diagnositcs. I had a similar misfire mystery which turned out to be the low pressure fuel pump control unit. But only a full BMW diagnostic identified the fault...

Good luck.

Doesn't the Foxwell tool come with all the same diagnostic abilities? I also have INPA on another computer.

Cdutch513 · 01-03-2020, 08:00 PM

I used OBD Fusion to get a log of the misfire. I selected to record everything I could. Here it is.

https://datazap.me/u/cdutch513/attem...=0&data=16-233

and here is another one with more pertinent information. It doesn't seem to have as high of a refresh rate though.

https://datazap.me/u/cdutch513/test-...3-4-9-10-18-20

rjahl · 01-03-2020, 09:36 PM

Quote:

Originally Posted by Cdutch513

I used OBD Fusion to get a log of the misfire. I selected to record everything I could. Here it is.

https://datazap.me/u/cdutch513/attem...38;data=16-233

First thing, ODB fusion and DCan sucks for data logging on these cars. It's uses all of the wrong protocols and the Frame rate is useless. I think your log is something like one frame every three seconds.

For this car, you have two choices. Dylan's BimmerGeeks software or Phono's TestO. TestO is free but you need a laptop.

Either one should provide a 120 millisecond Frame rate with 30 parameters or so. I've use Testo for years. I've logged N52, ZF transmissions, N54s, DCTs. It's a great tool and I don't mind having the laptop in the cars. My E89 is a bit of a pain as the laptop sets off the seatbelt sensor, so Its gets strapping in.😁

I've posted my Testo custom jobs for the MSV80 before before but if you need I'll dig them up.

Cdutch513 · 01-03-2020, 10:02 PM

Quote:

Originally Posted by rjahl

Quote:

Originally Posted by Cdutch513

I used OBD Fusion to get a log of the misfire. I selected to record everything I could. Here it is.

https://datazap.me/u/cdutch513/attem...38;data=16-233

First thing, ODB fusion and DCan sucks for data logging on these cars. It's uses all of the wrong protocols and the Frame rate is useless. I think your log is something like one frame every three seconds.

For this car, you have two choices. Dylan's BimmerGeeks software or Phono's TestO. TestO is free but you need a laptop.

Either one should provide a 120 millisecond Frame rate with 30 parameters or so. I've use Testo for years. I've logged N52, ZF transmissions, N54s, DCTs. It's a great tool and I don't mind having the laptop in the cars. My E89 is a bit of a pain as the laptop sets off the seatbelt sensor, so Its gets strapping in.😁

I've posted my Testo custom jobs for the MSV80 before before but if you need I'll dig them up.

How do you get this testO program to work lol.

rjahl · 01-04-2020, 09:00 AM

Quote:

Originally Posted by Cdutch513

Quote:

Originally Posted by rjahl

Quote:

Originally Posted by Cdutch513

I used OBD Fusion to get a log of the misfire. I selected to record everything I could. Here it is.

https://datazap.me/u/cdutch513/attem...38;data=16-233

First thing, ODB fusion and DCan sucks for data logging on these cars. It's uses all of the wrong protocols and the Frame rate is useless. I think your log is something like one frame every three seconds.

For this car, you have two choices. Dylan's BimmerGeeks software or Phono's TestO. TestO is free but you need a laptop.

Either one should provide a 120 millisecond Frame rate with 30 parameters or so. I've use Testo for years. I've logged N52, ZF transmissions, N54s, DCTs. It's a great tool and I don't mind having the laptop in the cars. My E89 is a bit of a pain as the laptop sets off the seatbelt sensor, so Its gets strapping in.😁

I've posted my Testo custom jobs for the MSV80 before before but if you need I'll dig them up.

How do you get this testO program to work lol.

There are a few threads out there, I posted a series a few years ago. There are multiple sources and examples,

Get a copy of the July 2017 stand alone version of Testo. This runs without the full BMW / INPA , NSCexpert collection of tools.

Make sure you set up the correct com port by making the correction in the testo setup file.

Copy over the MSV80.PRG file from a full BMW tools install into the Testo ECU folder and you should be good to go.

Use Custom jobs to log multiple items.

Cdutch513 · 01-07-2020, 08:44 PM

So Im pretty sure I figured it out. I pulled all my intake piping today to check for boost leaks. I figured while I was there I could pull the intake manifold and check the runners and DISA valves.
Well, one of the DISA valves broke and the flap was sitting in the #1 cylinder runner.
Ordered the DISA replacement kit from FCPEuro. Like stabbing myself in the gut, it was $700. I also noticed A LOT of oil in the intake manifold and in the intake ports on the head.
I have decided to vent my PCV system to atmosphere. I believe that is why the DISA valve failed. It was covered in oil.
Does anyone have info on doing this?
I have checked for vacuum at the intake side and it doesn't produce any, so I know that vacuum from the intake side is not pulling any vapors, the engine is pushing them all out.

yupetc · 01-08-2020, 03:34 PM

I have the exact same problem an year ago where the large DISA broke and the flap came loose and get stuck right before cylinder 1. I also went through the whole diagnostics like you did and never would assumed that the DISA would put pieces inside the intake. Back then I replaced it with a cheap eBay DISA (it appears to be a rebuilt version, still same plastic flap). Car ran good until just a month ago I started getting misfire codes for cylinder 3 and 4, checked plugs/coils/injectors to be good, I knew immediately it's that DISA flap again. Upon opening up the intake manifold, the cheap eBay DISA flap had split into two haves and each half stuck in the runners 3 and 4 right before the valves. I'm so lucky that didn't fry the motor up, yet. But I've decided to purchase the aluminum flap upgrade kit and get this thing fixed for good. I think for anyone running the 3-stage, this aluminum flap upgrade is a must.

Cdutch513 · 01-08-2020, 03:38 PM

Quote:

Originally Posted by yupetc

I have the exact same problem an year ago where the large DISA broke and the flap came loose and get stuck right before cylinder 1. I also went through the whole diagnostics like you did and never would assumed that the DISA would put pieces inside the intake. Back then I replaced it with a cheap eBay DISA (it appears to be a rebuilt version, still same plastic flap). Car ran good until just a month ago I started getting misfire codes for cylinder 3 and 4, checked plugs/coils/injectors to be good, I knew immediately it's that DISA flap again. Upon opening up the intake manifold, the cheap eBay DISA flap had split into two haves and each half stuck in the runners 3 and 4 right before the valves. I'm so lucky that didn't fry the motor up, yet. But I've decided to purchase the aluminum flap upgrade kit and get this thing fixed for good. I think for anyone running the 3-stage, this aluminum flap upgrade is a must.

Well I got mine from FCP Euro so they have lifetime warranties. So hopefully they don't, but I'll be covered. Lol

yupetc · 01-09-2020, 09:15 AM

The DISA valve is under lifetime warranty, that's pretty cool. But it won't solve your problem in the event that the valve fails and broken parts and pieces fall into the runners and by chance any small piece enough to get into the chamber and causing engine failure, will FCP get you a new motor over their guarantee on just the valves? If they will, then I'd jump on buying their valves for myself.

Cdutch513 · 01-09-2020, 09:21 PM

UPDATE: replaced the DISA valves. Car runs smoother, but still misfires any time I get into moderate/high load(boost). Starts to sputter then throws the misfire code(still cylinder 1 29CD).

Cdutch513 · 01-09-2020, 11:22 PM

UPDATE #2
I replaced the DISA valves. Car still misfired on cylinder one. For shits and giggles, I swapped cylinder 1 and 2 coils again. Misfire followed.

What happened was my first misfire was cylinder 1. I swapped 1 and 2 coils and I got a misfire in cylinder 6 at a lower RPM. When troubleshooting 6, I found the plugs to be bad, so I changed all the plugs and swapped 1 and 2 coils back the original position. Next day, misfire back on 1. I had ruled out the coil prematurely. Im kicking myself in the ass.
The car does feel much more alive now that the new DISA valves are in though. So that's a plus, not sure if it was worth $700 though lol. Oh well, live and learn.
THANK YOU to everyone that helped me.

@alexisgarciaag · 09-02-2020, 11:25 AM

Quote:

Originally Posted by Cdutch513

SOLVED!

one of the DISA valves broke and the flap was sitting in the #1 cylinder runner.

Background on the car:
2010 328i
ESS Supercharger and 3IM.

So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away.
Cool.
Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD).
Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one.
swapped injector. Still cylinder one.
compression test. 1, 2 and 3 all read between 205 and 210.
leak down test passed with flying colors.
cleaned MAF (even though its alpha n)
visually inspected plug wiring and connections, no visible faults.
visually inspected injector connection, no visible faults.
WHAT IS THE PROBLEM?!

TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed.

Please help.

Any updates?

I did mine as well and I hear this sound sometimes

M[IMG]https://share.icloud.com/photos/0_Z4...SQ93tz7WMATreg[/IMG]

E92William · 09-02-2020, 02:27 PM

That to me sounds like a powersteering pump or rack taking a massive dump. Not a misfire.

Either way one thing I never got around to understand is why people even run the 3 stage manifold in a supercharged car? It's such a precarious thing to do to use plastic fragile manifold flaps meant for adjustable runner length in NA engines in a forced induction application where it'll have no effect at all on performance and will cause the valves to fail due to increased manifold pressure..

01-02-2020, 10:00 PM	#1
Cdutch513 Captain 161 Rep 699 Posts Drives: 2010 E90 BMW 328i Join Date: Jun 2013 Location: Oak Harbor, WA iTrader: (0) Garage List 2010 BMW 328I [0.00]	Misfire SOLVED! one of the DISA valves broke and the flap was sitting in the #1 cylinder runner. Background on the car: 2010 328i ESS Supercharger and 3IM. So about a week ago I started to get a misfire. It happened when I was low in RPM and gave it over 50% throttle. Checked the spark plugs and they were shot so I replaced them and the misfire went away. Cool. Until the next day. I floored it to have some fun. The end of first gear felt funny, so I shifted to second and at 5500-6k rpm it started feeling weird again but I thought "Fuck it, send it." Kept it floored all the way to 6700 and the light came on. Cylinder one misfire(29CD). Just replaced the plugs, so I swapped 1 and 2 coil. Stayed on cylinder one. swapped injector. Still cylinder one. compression test. 1, 2 and 3 all read between 205 and 210. leak down test passed with flying colors. cleaned MAF (even though its alpha n) visually inspected plug wiring and connections, no visible faults. visually inspected injector connection, no visible faults. WHAT IS THE PROBLEM?! TL;DR Cylinder 1 misfire. New plugs, swapped coils, swapped injectors, compression test passed, leak down test passed. Please help. __________________ Murdered 2010 E90 328i ESS VT1+ \| BMW PE \| 3IM \| K Sport Kontrol Pro Last edited by Cdutch513; 01-07-2020 at 08:46 PM..
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01-03-2020, 04:08 AM	#2
Phil325i Brigadier General 615 Rep 3,194 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Time to get your engine read for fault codes... __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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01-03-2020, 01:00 PM	#4
Phil325i Brigadier General 615 Rep 3,194 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Apologies, I missed the code in your post. Sounds a strange one. You've done everything I would have thought of. It might be worth finding an indy who has access to BMW diagnositcs. I had a similar misfire mystery which turned out to be the low pressure fuel pump control unit. But only a full BMW diagnostic identified the fault... Good luck. __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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01-03-2020, 08:00 PM	#11
Cdutch513 Captain 161 Rep 699 Posts Drives: 2010 E90 BMW 328i Join Date: Jun 2013 Location: Oak Harbor, WA iTrader: (0) Garage List 2010 BMW 328I [0.00]	I used OBD Fusion to get a log of the misfire. I selected to record everything I could. Here it is. https://datazap.me/u/cdutch513/attem...=0&data=16-233 and here is another one with more pertinent information. It doesn't seem to have as high of a refresh rate though. https://datazap.me/u/cdutch513/test-...3-4-9-10-18-20 __________________ Murdered 2010 E90 328i ESS VT1+ \| BMW PE \| 3IM \| K Sport Kontrol Pro Last edited by Cdutch513; 01-03-2020 at 09:27 PM..
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01-07-2020, 08:44 PM	#15
Cdutch513 Captain 161 Rep 699 Posts Drives: 2010 E90 BMW 328i Join Date: Jun 2013 Location: Oak Harbor, WA iTrader: (0) Garage List 2010 BMW 328I [0.00]	So Im pretty sure I figured it out. I pulled all my intake piping today to check for boost leaks. I figured while I was there I could pull the intake manifold and check the runners and DISA valves. Well, one of the DISA valves broke and the flap was sitting in the #1 cylinder runner. Ordered the DISA replacement kit from FCPEuro. Like stabbing myself in the gut, it was $700. I also noticed A LOT of oil in the intake manifold and in the intake ports on the head. I have decided to vent my PCV system to atmosphere. I believe that is why the DISA valve failed. It was covered in oil. Does anyone have info on doing this? I have checked for vacuum at the intake side and it doesn't produce any, so I know that vacuum from the intake side is not pulling any vapors, the engine is pushing them all out. __________________ Murdered 2010 E90 328i ESS VT1+ \| BMW PE \| 3IM \| K Sport Kontrol Pro
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01-08-2020, 03:34 PM	#16
yupetc Captain 390 Rep 661 Posts Drives: 2015 X535i Join Date: Feb 2013 Location: Houston, TX iTrader: (0)	I have the exact same problem an year ago where the large DISA broke and the flap came loose and get stuck right before cylinder 1. I also went through the whole diagnostics like you did and never would assumed that the DISA would put pieces inside the intake. Back then I replaced it with a cheap eBay DISA (it appears to be a rebuilt version, still same plastic flap). Car ran good until just a month ago I started getting misfire codes for cylinder 3 and 4, checked plugs/coils/injectors to be good, I knew immediately it's that DISA flap again. Upon opening up the intake manifold, the cheap eBay DISA flap had split into two haves and each half stuck in the runners 3 and 4 right before the valves. I'm so lucky that didn't fry the motor up, yet. But I've decided to purchase the aluminum flap upgrade kit and get this thing fixed for good. I think for anyone running the 3-stage, this aluminum flap upgrade is a must. __________________ 2015 X535i - CP Piston, Manley Rod, ACL/King bearings, MILVs VRSF full charge Pipe, Wagner FMIC, Hybrid Turbo, MHD2+ VRSF DP, UR Front/Rear Sway Bars, Eibach springs, Bilstein B6 2015 MINI COOPER - Mahle Pistons, Max Rods, BMS intake, CTS charge pipe, Wagner Intercooler, ByteTronik Tune, VRSF DP 2017 540i - MHD2+, VRSF DP, TU Pump
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01-09-2020, 09:15 AM	#18
yupetc Captain 390 Rep 661 Posts Drives: 2015 X535i Join Date: Feb 2013 Location: Houston, TX iTrader: (0)	The DISA valve is under lifetime warranty, that's pretty cool. But it won't solve your problem in the event that the valve fails and broken parts and pieces fall into the runners and by chance any small piece enough to get into the chamber and causing engine failure, will FCP get you a new motor over their guarantee on just the valves? If they will, then I'd jump on buying their valves for myself. __________________ 2015 X535i - CP Piston, Manley Rod, ACL/King bearings, MILVs VRSF full charge Pipe, Wagner FMIC, Hybrid Turbo, MHD2+ VRSF DP, UR Front/Rear Sway Bars, Eibach springs, Bilstein B6 2015 MINI COOPER - Mahle Pistons, Max Rods, BMS intake, CTS charge pipe, Wagner Intercooler, ByteTronik Tune, VRSF DP 2017 540i - MHD2+, VRSF DP, TU Pump
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01-09-2020, 09:21 PM	#19
Cdutch513 Captain 161 Rep 699 Posts Drives: 2010 E90 BMW 328i Join Date: Jun 2013 Location: Oak Harbor, WA iTrader: (0) Garage List 2010 BMW 328I [0.00]	UPDATE: replaced the DISA valves. Car runs smoother, but still misfires any time I get into moderate/high load(boost). Starts to sputter then throws the misfire code(still cylinder 1 29CD). __________________ Murdered 2010 E90 328i ESS VT1+ \| BMW PE \| 3IM \| K Sport Kontrol Pro
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01-09-2020, 11:22 PM	#20
Cdutch513 Captain 161 Rep 699 Posts Drives: 2010 E90 BMW 328i Join Date: Jun 2013 Location: Oak Harbor, WA iTrader: (0) Garage List 2010 BMW 328I [0.00]	UPDATE #2 I replaced the DISA valves. Car still misfired on cylinder one. For shits and giggles, I swapped cylinder 1 and 2 coils again. Misfire followed. What happened was my first misfire was cylinder 1. I swapped 1 and 2 coils and I got a misfire in cylinder 6 at a lower RPM. When troubleshooting 6, I found the plugs to be bad, so I changed all the plugs and swapped 1 and 2 coils back the original position. Next day, misfire back on 1. I had ruled out the coil prematurely. Im kicking myself in the ass. The car does feel much more alive now that the new DISA valves are in though. So that's a plus, not sure if it was worth $700 though lol. Oh well, live and learn. THANK YOU to everyone that helped me. __________________ Murdered 2010 E90 328i ESS VT1+ \| BMW PE \| 3IM \| K Sport Kontrol Pro
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09-02-2020, 02:27 PM	#22
E92William Banned 1998 Rep 2,026 Posts Drives: 2008 E92 328xi Join Date: Nov 2019 Location: Miami iTrader: (0) Garage List 2008 BMW 328xi [0.00]	That to me sounds like a powersteering pump or rack taking a massive dump. Not a misfire. Either way one thing I never got around to understand is why people even run the 3 stage manifold in a supercharged car? It's such a precarious thing to do to use plastic fragile manifold flaps meant for adjustable runner length in NA engines in a forced induction application where it'll have no effect at all on performance and will cause the valves to fail due to increased manifold pressure..
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