i know this is an older post that someone brought back but i just want to throw my findings out there. Also im kind of in a different ball park than you guys being a cummins but what the heck.
Before install: with 410 gears and a zf5
max 24 lbs of boost @ max of 1200 deg in 5th full bore
going down the freeway in 5th at about 60mph i tipically see about 5-7lbs of boost and about 700-800 deg and about 2300-2500 rpm
Installed an ebay cxracing intercooler with 3" piping
Max 20 lbs of boost @ max of 950-1000 deg in 5th full bore.
going down the freeway in 5th at about 60mph i see about 4-5 lbs of boost and about 550-650 deg and about 2300-2500 rpm
I know i lost a little bit of boost but that is normal. I feel the truck has more get up and go and requires less throttle to do that same work as before. I am very happy with my intercooler and i wish i had installed it sooner. Also i gained about 2 MPG in fuel
and let me tell you. The bottom of my fuel petal has *** with my carpet ALL THE TIME!
Like i said im just posting this for the guys that are thinking about installing an intercooler.. If you have a turbo already the next best thing you can do it make use of that air and COOL IT!