How much boost with GT40 [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: How much boost with GT40


righteyeblind
08-28-2008, 01:23 PM
I have a gt4088r and only make 30psi with a spike to 33psi when I hit 5th. I just want to see what other people are making.

Dan@PPE
08-29-2008, 12:34 AM
No dual cp3's? If not then you are about on target.

righteyeblind
08-29-2008, 01:54 AM
Nope no dual cp3's. I thought they were supposed to make around 38psi?

Dan@PPE
08-29-2008, 01:15 PM
Not an 88 with no dual fuelers. who's tuning are you using?

righteyeblind
08-29-2008, 02:48 PM
my own

Dan@PPE
08-29-2008, 02:50 PM
How much pulse width and timing? you can pm me if you want.

pmeg1
08-31-2008, 09:58 PM
I make over 40 on the HOT+2 and LBZ CP3 with KD lift pumps on a dyno/hard on the street.

fire0021
08-31-2008, 10:11 PM
probaly need more fuel to get it lit verify you dont have boost leaks ether

Dan@PPE
08-31-2008, 10:50 PM
Paul,

If I remeber correctly you are using a .85 or.95 housing correct?