Originally Posted by slammin86

I installed some type r cams in my car, and went to the dyno. My boost gauge would climb to 6 to 7 psi, but once vtec kicked on, it would drop to 6. For the hell of it we turned vtec off and made a run, and it ran up to 10 psi.....what could be causing this.
It is a vortech charger on a ls/vtec if that matters.
good news is i picked up 30 hp off of cams. 265@6 psi...not too shabby