Guys... I'm really leaning toward ordering the 34-tooth and the 3.12" serpentine pulleys today.

My big concern would be the impending "KABOOM" if they are not tuned for properly. I desperately need to know if I can cap boost at 9lbs... does the software/blow off do that for me?

I want to get to my 420-425hp faster, but not necessarily go higher. Thoughts? I'm thinking the stock injectors would not keep up with higher boost then 9lbs anyway...

 

One more from the 300zx days. There was a little thing called a pop-off valve attached to the intake manifold. It had a spring in it and released any intake pressure over 8.5 psi. I don't think the vortech bov or bypasses are designed for something like this. Unfortunately, this is one of the things a turbo's wastegate is much better in. You could always pulls timing and add fuel past the 9 psi mark and reduce power that way.