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| Originally Posted by Silver00spike How soon would I blow my engine at 15PSI on stock internals? How much power would I make at 11 and 15PSI? approximately |
Well this is what I can tell you. I would not swap in either pulley with out being on a dyno so you can keep an eye on AFR's. You may need to make some other adjustments such as bigger injectors or a piggy back system to control the new amount of fuel required. There are a bunch of people that bought them on bimmerforums so check there and maybe you can get an idea.
I can tell you that our test car makes 10.8 RWHP per pound of boost. So at 11 PSI we made 118 RWHP.
-Chad