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Gear Ratios???

Predator support for GM diesel vehicles

Moderator: mikel

Post Tue Jul 13, 2010 10:01 am

Posts: 9
predator 0019416, 02 gmc duramax.. Just recieved the programmer yeserday..already played with the 120HP tune and worked great..now chasing better fuel mileage so have it set on the 65HP tune..i changed the tire size and speed limiter..my question is how important is it to mess with the gear ratio??? I believe the stock ratio is 4:10 and the one on the programmer is 3.78 or somthing close to that..any suggestion??

Post Tue Jul 13, 2010 10:02 am

Posts: 52349
Location: DiabloSport World Headquarters

Have you changed your gear ratio?
If not, dont change the setting in the tool...
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST

Post Tue Jul 13, 2010 4:17 pm

Posts: 9
no.. the diff is stock never changed anything..but they dont match..is that ok??
2002 GMC Duramax...108k...tru flo foam air system...straight piped...leveled out with Goodyear 285/75 silent armor...diablosport predator...

Post Tue Jul 13, 2010 4:29 pm

Posts: 52349
Location: DiabloSport World Headquarters

yup, dont change it unless you have physically changed the gears.
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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