Quote:
Originally Posted by ZStig
9
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500 uses 7lbs or is supposed to....
525 is 8lbs
550 m3 kits use 9lbs...
so it looks like each psi of boost gives 25hp basically...
note boost level at the bottom....
http://www.esstuning.com/products/Z4...er-System.html
i should have searched earlier.... my bad...