tranb000

So i guess my surge valve isn't bypassing enough air at idle and slight throttle on my d1sc procharged ls1 trans am. I have the surge valve 1 foot from the procharger. It is making my MAF read odd. Anyone ever heard of this.

blk00ss

iTrader: (66)

Big red race BPV and speed density. Problem solved

tranb000

Is this something you have seen before and what is big race bpv and speed density I'm a little new to this but learning a lot.

blk00ss

iTrader: (66)

Speed density is where you take your MAF off. And tune the car by the map sensor.

http://shop.brutespeed.com/ATI-3FASS...-3FASS-004.htm
That's the big red by pass valve lol. It let's out more air than you'll ever need...

tranb000

Thanks for the info i just did some research on it too. I don't know if i would need that blow off valve. I'm only boosting around 8lbs so i would think that procharger valve i have would be fine. I'm doing valve springs and maybe a cam if i decide to do that speed density.

9sectruck

iTrader: (9)

in less you have a radical engine that wants a ton of air the standard bov is fine with only 8psi of boost, speed density is the way to go

tranb000

It's not a radical engine just a street car. Just been having issues with the idle pretty much and the valve train in weak. But I'm thinking if i have to go with speed density to solve my idle issue, I'm going to have to get it tuned again so I might as well just put a cam in while doing the valve springs. Then I know i'll be a little over 500 rwhp at the wheels.