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      12-19-2012, 10:54 PM   #1
x5lover7777
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engine light after dp/tune

had dp and ecu tune with o2 off, now i have check light, read code as u0100: lost counnunication with engine control module/powertrain control module "a" and p0171: system is too lean,, i double check all wire and vacume hose and etc,,, any suggestion?
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      12-20-2012, 04:05 PM   #2
RaTeD ///M
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Who did your tune?
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      12-26-2012, 01:00 PM   #3
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Your tuner should be able to tune that stuff out. With these mods I would recommend a dyno tune. Its worth your time and money, trust me. They will straighten out your AFR so your not running too rich or too lean.
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      01-16-2013, 01:52 AM   #4
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Go right back to the shop who tuned your car. If all you did was a dp and tune you should be ok. A friend of mine has an x6 dp, eisenmann muffler and ESS tune since he bought it new and it now has 35k and no problems at all! Its a BEAST
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      01-16-2013, 08:17 AM   #5
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spend so many hours search about this issue and went to few shops to get fix(got rip off ) i got tune and dp from aa, looks like there are gas leak between turbo and dp. after i installed new gaskets longft % drop. still bank 1 is bit high, i think i might need new dp, clamp and gasket again for passger side.
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