Maybe a vaccuum leak but the Boost keep rising???

Dismember

2003 black Terminator
Established Member
Joined
Apr 7, 2008
Messages
255
Location
Quebec City
Hi guys, my Cobra is acting weird at wot. She's falling on her face and down on power.

When i hit the throttle at first i got full power at 13-14 psi of boost till about 3000 rpm and a good AFR at 11.5. Then passing that point the boost keep rising 15-16-17 psi almost(wich is unusual) and fall on is face like if the belt is slipping or a Vac leak. Look like at that point the afr seems to go leaner as the motor is revving higher, and No Power.


So to be clearer ,- low rpm = normal boost = good afr ,good power.

- 3k-6k rpm = boost continue to rise(WTF??) seem to
become leaner, and unable to produce more power


Already done to the - new plugs Tr6 .32 gap
car
- clean the MAF
- new fuel filter

The problem is still there. Any idea guys???
sorry for the spelling

tx Ben
(mods in sig) Oh i cant datalog i got no handheld, and no code have been thrown on the scan(but the tune can trash the code i've heard?)
 
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