whenever i step on it and the boost kicks in it kinda feels like its slipping

[embi24]

ok my problem is and i believe people have come close to this or have had these issues but i cant find any posts that are the same.. anyway my problem, under normal driving conditions(under 3000 rpms) my car drives fine but whenever i step on it and the boost kicks in it kinda feels like its slipping.. but the rpms dont go up fast like its slipping. and my boost guage reads at full boost the entire time until i let off a little or completely.. also my bcs restrictor is out and im hitting 14-15psi and my vac is reading 20 at idle but drivin it will go to 23-25.. it cant be a boost leak if it stays at full boost the entire time right? anyway i cant figure it out but i know it should have more power.. any help would be appreciated.

 

[xdxoxuxgx]

Not to jack the thread, but in response to this:

check for boost leaks. as mentioned could be phantom knock. does it always do that or only sometimes. there are some times you punch it and it actually feels fast like it should, and other times it's like whats going on wheres the pushing you back in your seat pull. also do you notice when the problem is happening, if you let off the throttle, and then punch it again the power comes back? i had this problem with my first gst, it was totally stock and pretty mint condition. i put filter, bov, etc. did all the maintenance (proper plugs and wires, right gap, etc) and was still doing what i just mentioned. a few reading on phantom knock seemed like that was my problem. i never got around to seeing what it really was because i sold the car.

what do you mean understeer? you are turning and it's understeering? or do you mean torquesteer when you punch it?

My car does that sometimes, is that what phantom knock does? It will sometimes feel fast and pull good, and other times my boost gauge will start to go up but the car will fall flat on its face and not make any sort of power? Just curious about phantom knock cause these seem to be my symptoms. How can you take care of phantom knock?