Can't Boost More Than 11.5psi

[SDEWY5]

i got a Profec B Spec 2 kooked up to a GCG hi flow turbo, just got the car back on the road and i cant pull more than roughly 11.5 psi without getting severe detonation. Car hasn't been tuned at all, could this be why? running 98 octane always in it. Anyone got any ideas? should be right for more boost but its just not happy...fuel pump on the way out?

Thought might have been intake temps but it used to run 12 psi before fine on much hotter days...

i got no idea...might just be being optimistic...

[Fastrotor]

So am i to assume your running a std comp ? If so, why are you even asking this question..... Adding a totally different turbo changes your engines power curve quite alot..... you need to tune accordingly..... with a stock comp still in place.... sheezzz..... its still injecting similar fuel thinking its got the stock turbo..... do yourself a favour and get a programable comp and get a tune.

If your lucky, it will be before you destroy your motor.

Gary

[paulr33]

excess airflow ye shall recieve!!!

do a search it has been covered about 300 times

you are hitting an excess airflow protection in the stock ecu, and as fastrotor has said, throw the stock ecu in the bin and get a real ecu and this will solve you woes