normal backpressure...
 

SO... like everyone knows... i have a HX40 over HX60... 16cm2 over 32cm2...

I've been reading off my ISSPRO gauges, backpressure reads @ nearly 30psi, while i reach 70psi boost...

I'll take a video to prove this.... but nobody seems to believe this is even possible...

Are these abnormal numbers ? or is my system just flowing this well...

The gate on the HX40 is opening @ 30psi, and the 60 is well lit by then !

yep something is screwwy. you have to have drive pressure to make manifold pressure. 1to 1, 1 to 1.5 30psi drive would be no more than 30psi manifold with the stuff i work on. you cant make something from nothin.

that's what i was thinking....

guess isspro quality isn't always 100%