boost #'s [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: boost #'s


95-6.5
02-14-2005, 02:46 PM
got my guages installed and here is what im seeing.
on flat ground driving 60 im getting about 4psi and 450 degrees
if i stomp on it from a dead stop it jumps to 13psi and stays there for a couple of seconds then goes down to 10 untill i let off..
Does that sound about right to you??

grape
02-14-2005, 02:55 PM
yep

ronniejoe
02-14-2005, 04:29 PM
Does that sound about right to you??
Yes.

quantum mechanic
02-14-2005, 10:35 PM
Even with the WG sprung shut I only see 4-5 psi at 60 mph but I can hold 15psi at 70 mph.

DieselPro
02-14-2005, 10:37 PM
How much is your exhaust back pressure before the turbo at 15 PSI?

quantum mechanic
02-14-2005, 10:47 PM
Never installed the EBP guage but 15 does open my wg. I can hear it groaning.

DieselPro
02-15-2005, 08:29 PM
Reduce your exhaust back pressure is the name of the game with turbos. If you have 15PSI going in but have the 40 PSI back pressure you won't gain a thing.