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detination ?'s

Old 02-09-2006, 04:47 PM
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Default detination ?'s

i have a b16 with je pistons 9.2:1 and dsm 450cc blue tops at 55psi and a walbro 255 fuel pump i'm runnin a chipped p28 with uberdata and when ever i hit boost i detinate now i've had like three people try to tune it i've changed fuel pumps filter fuel rail and fuel pressure regulater now i only detinate at full throttle between 6500 and 9500 what's up 3/4 throttle is fine but i can't seem to floor it with out this problem any help
purpleboost is offline  
Old 02-09-2006, 07:15 PM
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Default Re: detination ?'s

get it retuned right.
jinxy is offline  
Old 02-09-2006, 08:16 PM
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Default Re: detination ?'s

Originally Posted by rawr
get it retuned right.

I would have to agree but there are so many different situations it could be. What gas are you using? How much boost are you pushing through this engine, what is your plug gap, what plugs are you using, what is base timing set to, how are the timing maps in the program, how is the AFR, and also when does it actually knock in a recorded datalog. Theres just too many things that could cause this but going back and giving it a thorough and proper tune will more than likely take care of it.
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