Quote:
Originally Posted by BRZranger
Looks good! What pulley are you guys using now / boost psi?
What is the difference of Perrin stage 4 vs syage 3,2 & 1?
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Both of us are using the 3.60" pulley that comes with the kit. I'll call this the stock pulley. It makes 7 PSI of boost @ 7500 RPM according to Perrin.
I do not know what the difference in stages are. I do know that my tune file had the words "Stage 4" in the file name hence why I posted it that way.