lly: how much boost

02bigstrokin

New member
Sep 9, 2008
882
0
0
how much boost are you guys seeing with lly's and stock turbo, lift pump and shimmed rail on a race tune? how do you increase it in a tune if its low? im sure the truck has no boost leaks, its only seeing 25 lbs on a 3100usec tune?:confused: thanks
 

skintback

Take this one to church
Mar 5, 2007
919
0
16
Florida
not sure on how to adjust it but i would say you should see 30-32 on a race tune stock turbo might spike 35 on shifts
 

616samuel

New member
Apr 26, 2011
178
0
0
Rockford, Michigan
on my max effort tune from duramaxtuner.com when i'm sled pulling i peg my 35psi gauge. not sure how much boost exactly but it can't be much more than 35psi