bucking under any boost

[IgoVroom]

Hey i'm kind of a newb but I could really use some help or idea's with my problem.

Whenever I give my car gas and I hit boost the car "bucks"...It actually feels kind of like fuel cut...

I did a boost leak test and found some leaks and fixed them, but the problems still here. I also tried changing my plugs and wires. I got some cheap plugs and wires from autozone due to the fact that I couldn’t find a store that had NGK that was open at the time. Could the cheap plugs and wires still cause this problem (I plan on replacing them later)

The problem is so bad I can't drive my car...It's like a complete loss of power until I let off the gas and then it's fine (untill it gets boost again)

Please help?

 

[talongrl16g]

how much boos are you running it could be that it is knocking (detonation) or its blowing out the spark pull the plugs and check it out thats all i can think of

 

[IgoVroom]

I been playing with the boost controller so I have no idea its down all the way(I have a joe-p and if I back it off anymore the screw would fall out)....shouldn't matter tho cuz I can't even run at full boost...only takes a few psi to make it buck like that.

Oh yeah it's a 2g if that matters

 

[BUCK]

BUCKING seems to always end up being a Boost Leak - It's one of the few Symptoms that are alomost consistent - My guess is that one you fixed has Leaked again.

 

[fixmy97gst]

BUCKING seems to always end up being a Boost Leak - It's one of the few Symptoms that are alomost consistent - My guess is that one you fixed has Leaked again.

Hey I've got the same problem, it hapens when I go to full boost around 4000-5000 rpm then it's like fuel cut or something chocking off the engine ,but if I'm cruising the hwy at 80 it's just fine and if I don't punch it all the way past 4000 I'm fine...I did have an throttle body leak but I fixed it....what gives?? I think I'll try lowering the gap on my #4 plug because of possible spark blow out??? My car threw a CEL #4 cyl misfire...don't know what else to do??read all of my threads and you'll see what I'm gone through