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fuel cut? or boost cut?

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ricelife

Probationary Member
10
0
Jul 26, 2004
Findlay, Ohio
alright I have a problem, and I'm not really sure how to solve it, as of right now the only thing that I have done is a ported exhaust mani, and a 2.5" o2housing...and a boost controller.
and right now I have really bad fuel cut/boost cut, I don'tknow which one it is, I think it's fuel, 'cause right when it cuts out, ti starts going again, and it's whenever I am at 12+lbs at wide open throttle...I didn't know if I was going to need to upgrade my ecu, or if I should upgrade my fuel system
thanks
Ryan
 
CanadianTSi said:
You have a boost leak.
it's not boost leak, 'cause I'm getting boost..it boost very well up to 12-13lbs, then when you're at that for like 5 seconds maybe less it cuts out
 
Did you do a intake pressure test? Just because you're getting boost doesn't mean it's not leaking. Boost leak conditions are the usual culprit for fuel cut because the boost leak makes the turbo work harder to maintain boost. Your boost gauge sees 12 psi, but your airflow sensor sees the equivalent of 20-25 (for example) and it freaks the ecu out. You find the leak and plug it and your problems will go away.
 
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