When I push the throttle in, I build boost, but the car doesn't accelerate

[Abstrakt02]

I noticed 2 weeks ago that I had to put my foot further down on the gas pedal and my boost would kick in earlier without the car actually moving. And would stall when approaching a stop!!

After a visual inspection I found that the intercooler to intake piping was coming off so I put it back on and tightened the bracket

now when the car is warmed up and running for a long time or driven hard for a while I would have the same problem where I am opening the throttle even more as boost kicks in but I am not really going any faster.

visual inspections prove nothing is wrong but maybe I should change my spark plugs because of running very lean when my intake was coming off.

Any suggestions?

[jr_ss]

What psi are you running at? Boost leak comes to mind....

[white90esex]

do your RPMs go up too?

Have you thought of maby a clutch issue?

[idahotuner]

does sound like a clutch issue