Alright, this is my first Diesel tune, done on my personal vehicle. Dyno was done on a Mustang Dyno.
I am posting this info so others can benefit from the information. None of the numbers are inflated.
Details:
-2005 Chevy 2500HD Duramax
-Stock airbox with K&N filter
-4 inch exhaust with muffler, no DPF
Tune:
-I went by the tuning tutorial found here in the Diesel tuning section. Roger ramjet and mecanicman are two of the most helpful posters I found.
-I added 10% more fuel
-I added 10% more boost
-I modified the injection timing to 50%before TDC/50% after TDC
-Under Engine-Torque management- I increased the torque to max values.
Seat of the Pants:
-Its a whole different truck now. LOTS more torque in the lower RPM's. On the dyno I could not lock the trans in 4th gear with VCM controls because we had to plug the autotap off of the dyno into the DLC in order to get a RPM reading. If you could lock it in gear and read from say 1500rpm and up, the torque would be way higher.
Stock settings-
The truck made 268hp/478tq and ran a [email protected] in the 1/4 mile
10/10 tune-
The truck made 299hp/586tq and ran a [email protected] in the 1/4 mile
During the 1/4 mile tests the weight of the truck was put in at 6900lbs
Dyno is located in west Georgia.
I have attached pictures of the 2 dyno graphs.
Enjoy!