[anthony240]

Before boosting more than stock, you should add an intercooler. This should generate a lot more power and you can safely boost up some more. 240hp is not hard to get. Boosting up to 13-15psi should wield 230-250rwhp. But that's with a stock turbo. It's highly recommended to replace that puny t25 to release the SR's true power.

EDIT: 15psi is really pushing it though, any higher and the turbo loses it's efficiency.