engine light after dp/tune - XBimmers.com

x5lover7777 · 12-19-2012, 10:54 PM

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?

RaTeD ///M · 12-20-2012, 04:05 PM

Who did your tune?

Jimshorts · 12-26-2012, 01:00 PM

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.

Brian@MWP · 01-16-2013, 01:52 AM

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

x5lover7777 · 01-16-2013, 08:17 AM

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.

12-19-2012, 10:54 PM	#1
x5lover7777 Private Drives: 2010 x5m Join Date: Jun 2010 Location: mt laurel NJ Posts: 74 iTrader: (1)	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 Private Drives: 2K12 X5M Join Date: Dec 2012 Location: Anchorage, AK Posts: 57 iTrader: (0)	Who did your tune? __________________ Carbon Black X5M Velos Stage 1 Tune, Stage 2 coming soon..... 09 Alpha 9+ GTR TSM tuned, stock motor & tranny for now....

12-26-2012, 01:00 PM	#3
Jimshorts Private First Class Drives: x5m Join Date: Jul 2012 Location: Live free or die Posts: 150 iTrader: (0)	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. __________________ 2010 BMW X5 M Eurocharged: 12.298 @ 112.860 MPH Tune only. 2005 E55 AMG 11.93 @ 117 1/4 mile 7.75 @ 95 1/8mile tune, shorties, street tires. Sold

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01-16-2013, 01:52 AM	#4
Brian@MWP Private Drives: BMW Join Date: Jan 2013 Location: Chicago Posts: 90 iTrader: (0)	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

01-16-2013, 08:17 AM	#5
x5lover7777 Private Drives: 2010 x5m Join Date: Jun 2010 Location: mt laurel NJ Posts: 74 iTrader: (1)	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.