So I just picked up a 2003 ram 3500 with the 5.9 Cummins and 6-speed manual.
The owner who did all the performance parts was not the owner I bought it from, which makes things tough.
She runs hot! cruising at 60mph on a flat road it was running 800°F, IN THE DOWNPIPE!
First things first, I am working on getting the EGT probe into the manifold, where it belongs.
I found a boost leak, and fixed it; no real change. So then I loaded in a stock tune file. Now its running 600-700°F at 60mph. It also black smokes constantly, except at idle, but any throttle position it smokes. Even cruising at 60 you can see a light black haze out the pipe.
Known mods:
It had a smarty jr (I put in a stock tune file)
s300sx3 Turbo (p/n: 177283)
3-piece manifold (either has wrong charge pipe, or wrong boots; bad angles which caused the original leak)
Mishimoto 3.5" in/out intercooler
Some type of high flow intake elbow
4" straight piped
FASS Lift Pump
The head appears to have been removed at some point, so I have no clue if anything has been done to it.
Really just looking for a way to keep things cool and safe. Plus I need to haul a 10k trailer through the mountains soon.
I am experienced with GM gas tuning on HP Tuners, but never tuned a diesel. I have built a 12 valve in the past and understand the core concepts.
This is my DD until my GMC gets it's transfer case rebuilt, until the GMC is back together I just need this truck to last. Once I have my other truck back Ill start tearing into the ram lol
TIA