I need to know what is the power limits for the APS TT first gen ( Garrett turbos )
I´m running 21 psi now......and wondering if I can raise the boost and get real gains....not only warm the air....

 

I would have though you at the limit now! You could raise boost a little but you may only make more torque and no more power?

What power are you at now?

 

I raise the boost to 23-24 lb , and I can`t feel any gain from 20-21 lb , and engine starts to knocking continiously, according to the logs sent by the Utec.
I think the limits for this turbos is around 20 lb , and according to APS , this turbos are Garrett GT2871R???? I don´t think so...
Anyway , I´m thinking in get bigger turbos , but not sure about fitting problems...