boost leak?! or another problem?!!? fml!

cmattone93 · 09-07-2011, 10:25 PM

waddup guys.. i have the jb4 in my 08 335xi coupe and ive had it in for the last few months, maybe 5 or 6 months... just the the other day i was doin a highway run and when i hit 110mph, the engine malfunction popped onto my idrive so i backed down... so i cleared all the codes and shut off the chip.. i did a run yesterday and i hit 145mph no problems at all with the chip off... anyone know what might be the problem here? also my boost fluctuates when i have the chip on from 10 lbs to 5 lbs and stays at 5lbs after 3rd gear.. almost all torque is gone... also i cannot brake launch anymore because it wont build up past 2800 rpms when usually i can reach almost 3200 rpms if not more... fml

Coolieman1220 · 09-07-2011, 10:46 PM

where do u hit 145 in queens?

tibra1 · 09-07-2011, 10:47 PM

Not the first I have heard w JBers limping when 100+...u gotta check in w the JBers about what map to run and all that...start off by scanning what codes u threw.

cmattone93 · 09-08-2011, 04:27 AM

Quote:

Originally Posted by Coolieman1220

where do u hit 145 in queens?

cross island expressway between the throgs neck bridge and northern blvd heading south

09-07-2011, 10:25 PM	#1
cmattone93 Banned 37 Rep 258 Posts Drives: 08 335xi coupe, black on black Join Date: Jan 2011 Location: Queens, NY iTrader: (2)	boost leak?! or another problem?!!? fml! waddup guys.. i have the jb4 in my 08 335xi coupe and ive had it in for the last few months, maybe 5 or 6 months... just the the other day i was doin a highway run and when i hit 110mph, the engine malfunction popped onto my idrive so i backed down... so i cleared all the codes and shut off the chip.. i did a run yesterday and i hit 145mph no problems at all with the chip off... anyone know what might be the problem here? also my boost fluctuates when i have the chip on from 10 lbs to 5 lbs and stays at 5lbs after 3rd gear.. almost all torque is gone... also i cannot brake launch anymore because it wont build up past 2800 rpms when usually i can reach almost 3200 rpms if not more... fml
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09-07-2011, 10:46 PM	#2
Coolieman1220 Banned 73 Rep 1,770 Posts Drives: 2010 335d Join Date: Jul 2010 Location: New York City iTrader: (0)	where do u hit 145 in queens?
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09-07-2011, 10:47 PM	#3
tibra1 Banned 127 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	Not the first I have heard w JBers limping when 100+...u gotta check in w the JBers about what map to run and all that...start off by scanning what codes u threw.
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