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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > MHD "take a look at my log" thread



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      04-25-2022, 03:30 PM   #5457
tej98
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Quote:
Originally Posted by oZades View Post
Fixed my boost leak. How is everything looking?

https://datazap.me/u/ozades/log-1650...data=3-4-20-21
Looks good to me. I see low timing corrections on each cylinder, but the MHD guide for reading these says anything up to 3* is normal? LPFP pressure looks great as well, is this a stock pump?
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      04-26-2022, 06:05 PM   #5458
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V8 map custom tune. Any input would be appreciated guys,

Timing corrections are due to crap tesco fuel I'm using at the moment. Pulled strong throughout, part throttle response seemed better.

https://datazap.me/u/shelim2020/v8-j...og=0&data=3-23
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      04-26-2022, 06:12 PM   #5459
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Quote:
Originally Posted by oZades View Post
Fixed my boost leak. How is everything looking?

https://datazap.me/u/ozades/log-1650...data=3-4-20-21
Looks good apart from way too many timing corrections across multiple cylinders.

Have you done Plugs and Coils recently?

Try adding some E85 to see if corrections go away, could be due to the fuel your using.
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      04-28-2022, 07:42 AM   #5460
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Hey, can someone take a look at my logs? I think one of my fuel pumps has gone bad but not sure. I get misfires on several cylinders when driving and when idle
https://datazap.me/u/kontonamn1/335x...og=0&data=3-21
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      04-28-2022, 07:47 AM   #5461
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Quote:
Originally Posted by accountname19 View Post
Hey, can someone take a look at my logs? I think one of my fuel pumps has gone bad but not sure. I get misfires on several cylinders when driving and when idle
https://datazap.me/u/kontonamn1/335x...og=0&data=3-21
Check your codes and find out which cylinders misfiring first, swap plugs/coils around to see if misfire follows.
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      05-03-2022, 11:33 AM   #5462
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If anyone has time to look at my log.. Version 2 of a custom tune. Just switched to a 3.5bar TMAP and Tial BOV.
https://datazap.me/u/jmadams/wedge-v...=1&data=3-4-21
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      05-03-2022, 01:08 PM   #5463
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Quote:
Originally Posted by jadams161 View Post
If anyone has time to look at my log.. Version 2 of a custom tune. Just switched to a 3.5bar TMAP and Tial BOV.
https://datazap.me/u/jmadams/wedge-v...=1&data=3-4-21
You need a new LPFP. Also too many corrections there, if your plugs and coils are old then you can try new ones. You should be OK with that boost and timing on 93.
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      05-03-2022, 02:06 PM   #5464
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Quote:
Originally Posted by CarAbuser View Post
You need a new LPFP. Also too many corrections there, if your plugs and coils are old then you can try new ones. You should be OK with that boost and timing on 93.
Everything is new, few thousand miles. It's a 2009 with 62k. I did notice the LPFP drop off. I did upgrade the LPFP sensor last year. Because of a shadow code on it. That's the first time seeing that. Did the log on a full tank. My hpfp has been changed several times by bmw over the years. Car starts, idles and drives perfectly..
Looking at the Boost Concepts unit. Drop in stage 2..$350

Last edited by jadams161; 05-03-2022 at 06:42 PM..
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      05-03-2022, 05:05 PM   #5465
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Quote:
Originally Posted by jadams161 View Post
Everything is new, few thousand miles. It's a 2009 with 62k. I did notice the LPFP drop off. I did upgrade the LPFP sensor last year. Because of a shadow code on it. That's the first time seeing that. Did the log on a full tank. My hpfp has been changed several times by bmw over the years. Car starts, idles and drives perfectly..
Corrections are minor and mostly on 1 cylinder at a time, it's probably due to your fuel quality. You can add some E85 and see if they go away. Also I'd wait till tuner has dialed in the tune or at least a couple of more revisions before throwing parts at it.
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      05-03-2022, 06:43 PM   #5466
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Quote:
Originally Posted by Saif2018 View Post
Corrections are minor and mostly on 1 cylinder at a time, it's probably due to your fuel quality. You can add some E85 and see if they go away. Also I'd wait till tuner has dialed in the tune or at least a couple of more revisions before throwing parts at it.
OK. I can't get any E85 or anything near me.. Best is 93.I was getting that fuel pump plausibility code all last year. Change sensor and it went away. I don't mind buying a good pump if it future proofs the fuel system a bit and gives me some headroom.
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      05-03-2022, 10:24 PM   #5467
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Quote:
Originally Posted by jadams161 View Post
OK. I can't get any E85 or anything near me.. Best is 93.I was getting that fuel pump plausibility code all last year. Change sensor and it went away. I don't mind buying a good pump if it future proofs the fuel system a bit and gives me some headroom.
No worries mate.
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      05-04-2022, 05:21 PM   #5468
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First time posting here but this is an awesome thread, any expert advise would be greatly appreciated.

*mhd custom tune - full e85 ( supporting mods done accordingly )
*2015 M235i Manual 6 speed - 55k miles

Again thanks for any insight on the torque limiter kicking in near 700nm?

It was my assumption manuals didn't have limits set..

Here is recent log showing as such;

https://datazap.me/u/235-4-me/log-16...17-19-20-21-27
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      05-04-2022, 05:42 PM   #5469
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N55e on stage 1 no other mods. Is a stft that progressively is goes to -23% during the logging pull normal?
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      05-11-2022, 08:05 AM   #5470
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New log for 3rd revision of Wedge tune.
Going to replace the LPFP this weekend with a Walbro 450 and a new pressure regulator/filter on left side tank.
https://datazap.me/u/jmadams/wedge-v3?log=0&data=3-4-21

Last edited by jadams161; 05-11-2022 at 08:48 AM..
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      05-11-2022, 11:39 AM   #5471
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Quote:
Originally Posted by jadams161 View Post
New log for 3rd revision of Wedge tune.
Going to replace the LPFP this weekend with a Walbro 450 and a new pressure regulator/filter on left side tank.
https://datazap.me/u/jmadams/wedge-v3?log=0&data=3-4-21
Looks fine apart from LPFP and throttle seems all over the place. Can you ask Wedge why that is, would like to hear the explanation?
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      05-11-2022, 11:52 AM   #5472
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Quote:
Originally Posted by Saif2018 View Post
Looks fine apart from LPFP and throttle seems all over the place. Can you ask Wedge why that is, would like to hear the explanation?
Doing the pump Saturday. I see the accel pedal pos is 100% but i see what you are saying about throttle position. Is that the throttle body opening and closing? I wonder if the fuel pressure could cause that? I don't have any codes for boost or vacuum leaks. DSC is completely off.
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      05-11-2022, 03:07 PM   #5473
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Quote:
Originally Posted by jadams161 View Post
Doing the pump Saturday. I see the accel pedal pos is 100% but i see what you are saying about throttle position. Is that the throttle body opening and closing? I wonder if the fuel pressure could cause that? I don't have any codes for boost or vacuum leaks. DSC is completely off.
Yeah it's the throttle position, should be wide open unless you have overboosting, DSC/DTC cutting in etc, I'd like to know the reason, I've seen it on V10 OTS maps as well, pretty sure it's tune related.
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      05-12-2022, 06:55 AM   #5474
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Quote:
Originally Posted by Saif2018 View Post
Yeah it's the throttle position, should be wide open unless you have overboosting, DSC/DTC cutting in etc, I'd like to know the reason, I've seen it on V10 OTS maps as well, pretty sure it's tune related.
DTC is 100% off. Kickdown off. Found this posted on MHD group...


"Throttle closure is due to load over load req. Period.
Boost can be 30psi with target at 20psi and as long as load is under target the throttle will be wide open.
Of course, once the throttle closes boost will rise as it is measured pre throttle.
On stock cars the boost target to load target relationship is pretty accurate and if boost is on target load will be on target and throttle closures will be minimal.
As you increase the efficiency of the turbo you will require less boost to hit a given load so boost on target will result in load over target.
OTS maps cannot fine tune this for every car. They are setup for the median."
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      05-12-2022, 09:59 AM   #5475
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Quote:
Originally Posted by jadams161 View Post
DTC is 100% off. Kickdown off. Found this posted on MHD group...


"Throttle closure is due to load over load req. Period.
Boost can be 30psi with target at 20psi and as long as load is under target the throttle will be wide open.
Of course, once the throttle closes boost will rise as it is measured pre throttle.
On stock cars the boost target to load target relationship is pretty accurate and if boost is on target load will be on target and throttle closures will be minimal.
As you increase the efficiency of the turbo you will require less boost to hit a given load so boost on target will result in load over target.
OTS maps cannot fine tune this for every car. They are setup for the median."
Thanks for posting the reply.
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      05-12-2022, 05:39 PM   #5476
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Hello gents and ladies
Anyone bored and want to take a look at my logs it would be like greatly appreciated.
I am losing boost and ready need it back in my life.
On MHD stock map I am getting 3psi.
Stage 1, I am getting 6-7psi
Why would the boost achieved bepend on the map?
A leak is a leak right?
2007 335i

https://datazap.me/u/one843/n54-stock-map-3rd-gear
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      05-12-2022, 06:20 PM   #5477
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Hey guys,

Brand new to The forum, and BMW’s in general. Just picked up this 2009 335i and it has really rough cold starts,after it’s warm it starts fine. Also when I try to give it much past 1/2 throttle it misfires and cuts power getting into boost. My thoughts originally were hpfp but based on the logs below, one is in the stage 2+ and the other is in stage 1+, could it be lpfp or something else? Similar results. Any help would be appreciated

https://datazap.me/u/randyw89/stage-...data=3-4-12-13

https://datazap.me/u/randyw89/stage-1?log=0&data=3-13
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      05-12-2022, 08:22 PM   #5478
Saif2018
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Quote:
Originally Posted by One843 View Post
Hello gents and ladies
Anyone bored and want to take a look at my logs it would be like greatly appreciated.
I am losing boost and ready need it back in my life.
On MHD stock map I am getting 3psi.
Stage 1, I am getting 6-7psi
Why would the boost achieved bepend on the map?
A leak is a leak right?
2007 335i

https://datazap.me/u/one843/n54-stock-map-3rd-gear
Stage 1 targets higher boost than stock, so it's not surprising that actual boost is higher than your stock map levels.

Just for your records approximately 7-8 psi is actually supposed to be stock boost, your stage 1 map is targeting approximately 13.5 psi, which your turbos should easily hit.

You probably have a boost leak, a smoke test is a good idea. Replace all vacumn lines if you haven't done so and check all connections including vacumn cannister connection, FMIC, charge pipe connection etc, Diverter valves

Next thing to do is adjust your Wastegate actuator rods, if that still doesn't fix the problem, replace boost solenoids. If the problem persist, your turbos are most likely buggered.

Last edited by Saif2018; 05-12-2022 at 08:31 PM..
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