Not feeling the true potential of my stock dsm at 10psi...

[Boosted_827]

I've done tonns of searches but none of the searches helped so here we go:

I've had my car for approxiamently 2 years now. It's 93 tsi awd with 112 000 kms. My problem is when I give it WOT, the car pulls but doesn't pull as hard as it used to when i fixed a boost leak on the vacuum line to the fuel pressure regulator. In the past history, i also had a boost leak on my sidemount sintercooler so that was replaced. So now i'm clueless, when i floor it all i hear is the motor revving up, the turbo spoolin' and the boost gauge reads 10 psi but no go....(And no, it's not my clutch)
I've done a boost leak test and there was no leaks what so ever. I've also brought my car to a dsm shop and they have no clue what the problem is. They said that my timing was off or my turbo was bad. I checked my turbo and there was minimal shaft play but nothing serious and i don't even blow any smoke out of my exhaust. the only modd done to my car is a k&n air filter...

Please help, I already feel embarrassed losing to a honda prelude....thanks in advanced!!!!

 

[HighPsi92GST]

did you check for shaft play in and out?
all maintenance things up to date (fuel filter, plugs, wires)