robs99si

Is it normal to take so long to develope 10 psi at 5800 rpm in a 99'civic si b16a w/.63 trim nissan 300zx t3? works great and all but I wish I was boosting 10psi at 4-4500rpm instead.

turboDXcoupe

are you using a hm mbc?

robs99si

yeah, I'm using a home made mbc. I got a turbo xs mbc on its' way.

robs99si

on what rpm do you think I should be getting 10psi full boost?

chingro4u

i have almost the same specs, i get 10psi at 4700rpm

robs99si

do you reach 10psi on 1st gear by 4800 rpm?

robs99si

also my Auto Meter boost gauge sounds like it's leaking a little bit of air as boost increases, the tuner told me this is normal cause the gauge purges excess air into the atmosphere and factory gauges purge it back into the intake system. Is this true?

civicvtecb16a

Your boost gauge should not be leaking at all, get some zip ties around where all the vaccumm lines connect.

racerxfear

I think i have the same trim turbo as yours. Mine came out of a Nissan too. Well I would think it would be normal to hit 10 psi at that rpm with your motor. Mine is on a h22 and I hit 6 psi at 3200 rpm and pull all the way till redline. How does it pull once it hits full boost? I'm sure it wont matter since its only first gear when your racing. And once your into the next gear your be above 4800 rpm.