N54Tech.com - International Turbo Racing Discussion
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kabbanib kabbanib is offline
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Join Date: Oct 2016
Car: bmw 335 e92 n54 fbo+meth+pure stage 2
Default How to fix my lean afr ??? And it toasts my new turbo seals !!! - 11-01-2016, 03:02 AM

Hi i have an e92 n54 fbo+ inlets jb4 backend pure stage 2 and methanol 70 30 setup ,stage 2 fuel it just wanna know why my afr is lean ??what causes the afr to be lean And how to fix it? i can hear pops like unburned fuel and i've been kicked to map 4 my car smokes like a chimney now i think the high temp of the exhaust side caused by lean afr 13.5 on wot toasts my turbo seals my only code is outlet vanos ill try to clean and swap it asap any help would be much appreciated and whats the difference between a 3.5 tmap and 4.0 on stage 2 what suits me the best. Thnk u for all ur comments.
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Xshadows Xshadows is offline
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Car: 2008 135i
Default 11-01-2016, 05:43 AM

"Why does my car run wrong?" *proceeds to not attach logs* <-- 90% of people on here.

Please don't be one of those people.


DocRace Top Mount w/ Precision BB 6266 - JB4 G5 - BMS Pump flash - 650HP AD-E Intercooler - BERK Race Exhaust - Fuel-It Stage 2 Fuel pump - ER Chargepipe w/ TIAL BOV - 560whp @ 20psi on 93 octane only
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08_335i 08_335i is offline
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Car: 2008 335i
Default 11-01-2016, 12:37 PM

Jesus Christ, lol. WATISHAPPUNINGUYS. Seriously, post a log. If you're running lean, then you need to adjust your fuel... If you don't feel comfortable adjusting your tune, pay for a tuner to do it.
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