Hey guys, I have been having a problem for about a month now and I still don't know the solution. My car will run normally until I get above about 8lbs. of boost. Then, it feels like the car is choking itself. It still accelerates, only no where near as fast. It is running rich from that point up. I can rev it all the way to redline. The wierd thing is, if I only give it about thirty percent throttle, the car will accelerate normal all the way up to redline, but any more throttle and it bogs.........


I have tried replacing the o2 sensors(had spares), the throttle body (spare also) and disconnecting various connectors here and there. Nobody has any idea. If anyone has any idea please let me know because right now I am fizzucked. Thanks.
Josh

 

Might be a bad dv what dv are you running

 

Im sorry, my setup...
atp rs elim
evo dv
3" catback
stock cat, stock everything else.....

 

boost leak my friend... definately sounds like this is exactly whats wrong. there pretty easy to fix and never very costly. the hardest part is to find the darn thing.

 

But I dont see how that is a boost leak. I have had boost leaks before, and you can normally hear them, or find them with carb cleaner. I used three bottles of carb cleaner and never found one. And with a boost leak, the car runs somewhat ok up top though. Mine studders past thirty percent throttle, not too bad, but noticeably.

 

lol maybe its more ofa boost Hole like not just a lil leak

 

heh....yeah...I wish it was something that easy. I am betting that it is something electrical, I just have absolutely no idea.....and of course no cel's.

 

??????

 

Whats it feel like? I have a similar problem. When i hit the gas in 4th and 5th it feels like my car is sputtering. Another guy described it better. It feels like i am driving on uneven pavement. I don't think i am losing any power, and i don't have a boost gauge

 

Wonder if this could be a fuel pump issue... just a shot in the dark.