n54 misfire on mhd stage 1+

hunterhartley · 08-20-2018, 03:28 PM

someone please help or verify this, i went mhd stage 1+ about a week ago. and very first pull i did i got a misfire on cylinder 1. i switched the coils and spark plugs around and still have a misfire on cylinder 1! i flashed it back to stock and it ran completely fine. would this be bad injectors or a bad o ring? or even a leaky injector? someone please let me know

Antetokounmpo · 08-20-2018, 03:36 PM

misfires can be very on and off depending on conditions. I would just replace all 6 coils and plugs for $150 through rock auto or something

9krpmrx8 · 08-20-2018, 03:40 PM

Never tune before doing basic maintenance.

srey · 08-20-2018, 04:00 PM

I would start with new plugs and coils. From there you can continue to diagnose. Were you running appropriate fuel? Until you do more diagnosis it is hard to help point you in the right direction. Replace the spark plugs at least, then take a log and post it here.

TheMidnightNarwhal · 08-20-2018, 04:04 PM

Quote:

Originally Posted by 9krpmrx8

Never tune before doing basic maintenance.

Well IMO if his car was running fine before the tune... there is no reason to go ahead and replace a bunch of things before tuning.

BSM n54iS · 08-20-2018, 04:05 PM

Yes, there is.

srey · 08-20-2018, 04:19 PM

Quote:

Originally Posted by TheMidnightNarwhal

Well IMO if his car was running fine before the tune... there is no reason to go ahead and replace a bunch of things before tuning.

It's not like you need to replace a bunch of components for the heck of it. In the N54 plugs and coils are wear items. With a tune you are going to be stressing every part of the engine more than stock, so it makes sense you replace wear items in preparation for the added stress. Sure, you don't have to do those maintenance items first, as the new tune will out worn components in short order. There's nothing more frustrating than getting all excited for a new tune and to have the car go into limp mode because it exposes a weak link. Sure, you can do it after the tune as needed, but you'll likely need to replace them soon anyway. This is why I bought plugs and coils from FCP Euro, since I can swap them for new ones.

9krpmrx8 · 08-20-2018, 05:10 PM

Quote:

Originally Posted by TheMidnightNarwhal

Well IMO if his car was running fine before the tune... there is no reason to go ahead and replace a bunch of things before tuning.

But yet here you are, misfiring.

TheMidnightNarwhal · 08-20-2018, 05:13 PM

Quote:

Originally Posted by 9krpmrx8

But yet here you are, misfiring.

My point is why waste money replacing things that possibly wouldn't have been needed to replace.

Just replace them when you know they are the issue.

And I'm not the one having the issues.

Sgop335 · 08-20-2018, 05:31 PM

Lol dont speak much sense around here

BM3Rrrr · 08-20-2018, 06:38 PM

Quote:

Originally Posted by TheMidnightNarwhal

My point is why waste money replacing things that possibly wouldn't have been needed to replace.

Just replace them when you know they are the issue.

And I'm not the one having the issues.

OP's issue is most likely caused by coils/plugs

They should always be replaced before adding a tune even if they were "good" before.

9krpmrx8 · 08-20-2018, 10:21 PM

Quote:

Originally Posted by TheMidnightNarwhal

My point is why waste money replacing things that possibly wouldn't have been needed to replace.

Just replace them when you know they are the issue.

And I'm not the one having the issues.

Well you are not the OP so okay. But your opinion is still ridiculous.

TheMidnightNarwhal · 08-20-2018, 10:24 PM

Quote:

Originally Posted by 9krpmrx8

Well you are not the OP so okay. But your opinion is still ridiculous.

How is my opinion ridiculous?

Let's say I can tune my car and not have any issues because my coils and sparks were in great condition.

If I would have changed them before I would have literally wasted money as they were still ok.

How is that ridiculous? Only a fool would think it is. Oh wait.

BM3Rrrr · 08-20-2018, 11:46 PM

Quote:

Originally Posted by TheMidnightNarwhal

Well IMO if his car was running fine before the tune... there is no reason to go ahead and replace a bunch of things before tuning.

So do you wait for you car to start knocking and the low oil light to come on before you do an oil change because "it was running just fine" before that!? Hahaha

Its called preventative maintenance for a reason....

TheMidnightNarwhal · 08-20-2018, 11:49 PM

Quote:

Originally Posted by BM3Rrrr

So do you wait for you car to start knocking and the low oil light to come on before you do an oil change because "it was running just fine" before that!? Hahaha

Its called preventative maintenance for a reason....

Dude, that situation is completely out of context to what it is here.

Here it it is over the top preventative maintenance.

So if my car is running perfectly fine without any issues at all you would still replace all coils and spark plugs right away instead of waiting to see if it will still run ok with a tune?

Do whatever you want, but don't go saying if you want to tune the car you have to change the plugs and coils before, because you don't.

BM3Rrrr · 08-20-2018, 11:50 PM

Quote:

Originally Posted by TheMidnightNarwhal

How is my opinion ridiculous?

Let's say I can tune my car and not have any issues because my coils and sparks were in great condition.

If I would have changed them before I would have literally wasted money as they were still ok.

How is that ridiculous? Only a fool would think it is. Oh wait.

Maybe you would get away for a short time without replacing them but its almost certain that you would have issues sooner then later. Like stated above tunes stress parts quicker.

Your going to have to "waste" the money eventually so why not do it before any issues happen.

TheMidnightNarwhal · 08-20-2018, 11:51 PM

Quote:

Originally Posted by BM3Rrrr

Maybe you would get away for a short time without replacing them but its almost certain that you would have issues sooner then later. Like stated above tunes stress parts quicker.

Your going to have to "waste" the money eventually so why not do it before any issues happen.

But what if it happens you have 10k or 20 or 30k of life left in those part? You don't know because you replaced them before causing an issue.

Yeah ok if you can't afford not having your car for 2 days and you wanna gamble like that, I just find it over the top.

BM3Rrrr · 08-20-2018, 11:54 PM

Quote:

Originally Posted by TheMidnightNarwhal

Dude, that situation is completely out of context to what it is here.

Here it it is over the top preventative maintenance.

So if my car is running perfectly fine without any issues at all you would still replace all coils and spark plugs right away instead of waiting to see if it will still run ok with a tune?

Do whatever you want, but don't go saying if you want to tune the car you have to change the plugs and coils before, because you don't.

Its not really out of context as from what you're saying that is how you would maintain your car. (wait until something breaks then fix it)

Ask around...how many people have changed their coils and plugs with MHD. I bet you would have a really hard time finding someone that hasn't

rsyed07 · 08-21-2018, 08:30 AM

Always get new coils and 1 step colder plugs before running a tune. You may get away without coils but definitely need colder spark plugs gapped to 0.022. Once your tuned expect to change out the plugs every 15k to 20k miles.

6 new Delphi/Bosch coils from FCP with lifetime warranty $167
6 new NGK 95770 plugs $78

9krpmrx8 · 08-21-2018, 10:01 AM

Nah bruh, wait til' that shit fails under full boost, then replace them.

Sgop335 · 08-21-2018, 10:50 AM

Says the Resident Retard lol

catcher22 · 08-22-2018, 07:55 AM

Tuning and maintenance is like the chicken and egg situation. Which comes first? Well if your car is running fine without issues, why not tune? But beware, tuning enhances your car's issues and often causes codes that may not appear without the tune.

There have been so many times my car has run seemly perfectly, without codes, only to install a tune and have codes appear immediately or soon afterwards. This isn't bad, it's actually helped to determine exactly what needs to be fixed/maintained (plugs, coils) and helped keep my car in top shape.

I'm actually investigating a 30ff code that only appears when I use a specific map, even though it runs great on the stock map (no codes) and still runs great with the tune and the code. But until I can figure out how to fix the code, I drive on the stock map so it doesn't get triggered.

08-20-2018, 03:28 PM	#1
hunterhartley New Member 3 Rep 13 Posts Drives: 335i xdrive Join Date: May 2017 Location: Pittsburgh iTrader: (0)	n54 misfire on mhd stage 1+ someone please help or verify this, i went mhd stage 1+ about a week ago. and very first pull i did i got a misfire on cylinder 1. i switched the coils and spark plugs around and still have a misfire on cylinder 1! i flashed it back to stock and it ran completely fine. would this be bad injectors or a bad o ring? or even a leaky injector? someone please let me know
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08-20-2018, 03:36 PM	#2
Antetokounmpo Brigadier General 1550 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	misfires can be very on and off depending on conditions. I would just replace all 6 coils and plugs for $150 through rock auto or something __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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08-20-2018, 03:40 PM	#3
9krpmrx8 Clean is the new cool, keep it that way. 808 Rep 1,685 Posts Drives: 11' Alpine White 335i Sedan Join Date: Jan 2016 Location: San Antonio, Texas iTrader: (0)	Never tune before doing basic maintenance. __________________ 2011 335i, FBO, N55+ Turbo, full E85, S55 intercooler, etc. 2015 X5 35i Xdrive
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08-20-2018, 04:00 PM	#4
srey Lieutenant 220 Rep 418 Posts Drives: 2007 E90 335i 6mt Join Date: Jun 2017 Location: Idaho iTrader: (0)	I would start with new plugs and coils. From there you can continue to diagnose. Were you running appropriate fuel? Until you do more diagnosis it is hard to help point you in the right direction. Replace the spark plugs at least, then take a log and post it here.
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08-20-2018, 04:05 PM	#6
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Yes, there is. __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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08-20-2018, 05:31 PM	#10
Sgop335 Colonel 648 Rep 2,011 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	Lol dont speak much sense around here __________________ 335i e92 TPC 19Ts
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08-21-2018, 08:30 AM	#19
rsyed07 Captain 175 Rep 595 Posts Drives: E46 330i, E92 13' 335is Join Date: Jun 2016 Location: Central FL iTrader: (0)	Always get new coils and 1 step colder plugs before running a tune. You may get away without coils but definitely need colder spark plugs gapped to 0.022. Once your tuned expect to change out the plugs every 15k to 20k miles. 6 new Delphi/Bosch coils from FCP with lifetime warranty $167 6 new NGK 95770 plugs $78
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08-21-2018, 10:01 AM	#20
9krpmrx8 Clean is the new cool, keep it that way. 808 Rep 1,685 Posts Drives: 11' Alpine White 335i Sedan Join Date: Jan 2016 Location: San Antonio, Texas iTrader: (0)	Nah bruh, wait til' that shit fails under full boost, then replace them. __________________ 2011 335i, FBO, N55+ Turbo, full E85, S55 intercooler, etc. 2015 X5 35i Xdrive
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08-21-2018, 10:50 AM	#21
Sgop335 Colonel 648 Rep 2,011 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	Says the Resident Retard lol __________________ 335i e92 TPC 19Ts
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08-22-2018, 07:55 AM	#22
catcher22 Captain 294 Rep 922 Posts Drives: 2008 335xi Coupe Join Date: May 2008 Location: Virginia iTrader: (2)	Tuning and maintenance is like the chicken and egg situation. Which comes first? Well if your car is running fine without issues, why not tune? But beware, tuning enhances your car's issues and often causes codes that may not appear without the tune. There have been so many times my car has run seemly perfectly, without codes, only to install a tune and have codes appear immediately or soon afterwards. This isn't bad, it's actually helped to determine exactly what needs to be fixed/maintained (plugs, coils) and helped keep my car in top shape. I'm actually investigating a 30ff code that only appears when I use a specific map, even though it runs great on the stock map (no codes) and still runs great with the tune and the code. But until I can figure out how to fix the code, I drive on the stock map so it doesn't get triggered.
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