My friend bought a CT26 turbo from a supra, We built a manifold to make it fit on the d15b2. Ive checked the wastegate it have very very little shaft play almost none. When your driving you can hear it spoolin but the car feels slower than stock.
Im 95% sure there is no IC leaks, if anyone has any suggestions they would be apprciated. Another thing, all we have run at the moment is the down pipe thats it, would that have anything to do with it?

 

If the manifold is leaking would that cause my problems, if anyone has any suggestions please let me know.