trd turbo tunning plan

[fett22]

here;s the update i went to track and i am doing 15.5 s , and 15.9 with wet track, i have stock mufler with Cat, i will install a magnaflow and take out the cat, also need to replace the BOV, maybe on wekend.
so these is how it went, great response at beggining , turbo start boosting at 2.5 rpm up to 4.5 like a charm,but at higher rpm, in third and fourth gear , from 4.5 to 6 rpm engine acceleration decrease a lot. I need a few advices of what to do.
Also stock clucth is not responding so well, i felt a lot of power its been loosing from that ?

Before turbo i was doing 17.4 , so i gain almost 2 seconds, i have a friend that with same car turbo , its doing 14.8 just with turbo, no exhaust no aftermarket clucth ,
so what can be wrong with my car?.
i am boosting 0.5 bar, thats what trd computer its setup.

i am plannig to take it to 14s , so besides clucth, muffler ,crank pulley, what are other mods i could do?

Thanks for all.
Rodrigo.