Board index (Legacy) Predator Technical Discussion Predator GM Diesel oversize tires

oversize tires

Predator support for GM diesel vehicles

Moderator: mikel

Post Mon Jun 21, 2010 11:55 am

Posts: 1
I have a 2004 GMC Sierra 2500 HD with a duramax diesel .I running a Predator tune on it now .Is there any way for the predator to be updated for Larger tires or can i buy a speedometer calibrator that won't have a problem with the tune i am already running.

Post Thu Jun 24, 2010 4:46 pm

Posts: 272
You can change the tire size using your Predator. You will more then likely have to play with different numbers on the tuner to get the speedo right on by using a GPS, but you can for sure. No need for updates.
http://www.thetruckstop.us
07 - CHEVY LBZ DURAMAX
All-Terrain T/A® KO - 295 75R16,
DYNOED ON 20 July 08 WITH -
PREDATOR SET ON THE 85HP TUNE / 423 RWHP - 709 FT/LBS
PREDATOR SET ON THE 120HP TUNE / 458 RWHP - 754 FT/LBS

Post Thu Jun 24, 2010 10:22 pm

Posts: 11
I have tried to change my tire size by Height and by ratio, width, ect... it says that it has updated the tune but when i go back the numbers are still "NOT SET"? Is this normal. Does it not show the updated numbers?

Post Fri Jun 25, 2010 8:34 am

Posts: 52349
Location: DiabloSport World Headquarters

Thats normal, it will not retain the value but it is set once it say it is set.
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST


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