Originally Posted by John

286hp at 19psi actually. This is with boost tapering, which is easily fixed by either reflashing the ecu or by adding a simple manual boost controller. Its good for about 25-30hp just doing that, not even raising the boost. It's heavily detuned on the top end from the factory. So, say it wasn't detuned, it would make around 310-315hp.

What 4 cylinder ARE you impressed with?