Cars cutting fuel at 10lbs boost.

[Awdrex]

Hi all, I have a 05 Sti with tbe an Cobb ap stage 2(pro tune). Today leaving work getting on the highway my car kept cutting fuel(I believe) when I would hit 10lbs boost. The cel came on, I scanned it, no codes found. I reset ecu, drove, still cutting out. But no codes.

 

[HolyCrapItsFast]

^^ +1... I think we need to see a log of this in action... I'm not sure what would cause fuel cut at only 10psi of boost. I have seen this similar reaction on a recent car where you would floor it and right when boost kicks in it bucks and sputters. It was running pig rich which is why I think Jordan is suggesting an AFR reading.

Please get us a quick log of the event if you could.

In the mean time check for leaks or cracked hoses after the turbo

 

[Awdrex]

It would violently shut of power(fuel cut).

I have an idea. Last week I lost my right side fender liner on the highway, just looked inside the airbox and there a very little bit of water at the bottom. I have stock air box with silencer delete so I could be sucking water at wot. Btw it's raining cats and dogs here.

 

[Awdrex]

So I put the intake silencer back on, sealing the intake off from rAin and that did the trick. Thanks for everyones input!

 

[HolyCrapItsFast]

Ahhh nice! you fixed your own problem. I'm glad it was simple!!!