Originally Posted by
ANDY black s13
Mega impressive numbers, forgot your exact engine spec but didn't expect it to go near to or over 400 !!!,the head and cams are stock I thought?
regards the recirc as jonny mentioned a recirc fitting on a SQV 3 (jon200 on here was making the fittings for the sqv 3)
the way the valve works (pull/pivot rocker) the more boost you run the better the valve seals,no other brand uses that valve sealing system
the others (Forge piston type etc) rely on vacume alone to seal and imo can leak/bleed off boost pressure or stick part open if you lift off slowly