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Lemans82 Lemans82 is offline
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Car: 135i
Default 135i n54 BEF Random misfire at Wot - 03-07-2019, 09:29 PM

Hi everyone, since few weeks my car is giving me some weird and random misfire from several cylinder. It happen only at wot and on map 1 or 5, (cylinders 1,2,4) absolutely no problem when i disable the jb4 or if it is on map 4. It seem to happen more often between 3500 and 4000rpm. I run the pump flash, 91octane. Injector have been replace last summer (20k km ago), as well as my sparkplugs. I did a log in hope that someone here could help me find what is going on, cause i'm clearly not a pro with log reading. I run the car tune like this for over 100k km without a problem, i always heard about people having trouble with their n54, i guess its now my turn!

More detail on my car :
-n54 (2009) 156 000km Back end flash ( pump flash)
-********, dual cone intake, charge pipe, *******, ative Autowerke Axle back. Running on 91octane
Sparkplugs/injector done last summer (20k km ago)
Walnut blasting could be done again (65k km since last time i got it done). I think all as been said, if i have forgot to mention something usefull let me know. thanks guys
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Milan's Avatar
Milan Milan is offline
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Car: 08 335xi
Default 03-07-2019, 09:57 PM

Probably needs new plugs


09 335 - 6266
07 335i - 6870, E85 - SOLD
08 335xi - 6466, custom direct port meth - SOLD
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Lemans82 Lemans82 is offline
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Default 03-07-2019, 10:19 PM

Could be , but plugs aren't suposed to last more than 20k Kilometers ?
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THE BEAST THE BEAST is offline
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Default 03-07-2019, 10:38 PM

Agreed on new plugs.
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Car: E92 335XI
Default 03-07-2019, 10:45 PM

Tune puts more stress on weak/tired components of the ignition system.

Plugs - maybe get 1-2 step colder & gap accordingly

Coils also a possibility too.



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Lemans82 Lemans82 is offline
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Default 03-07-2019, 10:54 PM

allright thanks guys, i will check this out tomorow.
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Default 03-07-2019, 11:04 PM

Quote:
Originally Posted by Lemans82
allright thanks guys, i will check this out tomorow.



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Lemans82 Lemans82 is offline
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Default 03-09-2019, 01:39 PM

No more misfires !!

Sorry Dave, i bought the plugs from my Local store parts retailler.
But be sure that when i will need a FP_L i will order from your website ! Thanks for your help Everyone!
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Default 03-09-2019, 10:36 PM

Quote:
Originally Posted by Lemans82
No more misfires !!

Sorry Dave, i bought the plugs from my Local store parts retailler.
But be sure that when i will need a FP_L i will order from your website ! Thanks for your help Everyone!


Enjoy the rest of your weekend



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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