Defueling

Predator support for GM diesel vehicles

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hromadka_jay
Posts: 9
Joined: Mon Aug 02, 2010 8:25 pm

Defueling

Post by hromadka_jay »

I have a U7186 installed on my 2007 duramax lbz and it seems like it is defueling when it shifts especially between 3rd and 4th gear. Is this normal? It doesnt do it above 3/4 throttle, but anything less it feels as if I am letting off the throttle when it shifts. It is very annoying. I am running the latest revision as well on the 120 hp setting.
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mikel
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RE: Defueling

Post by mikel »

are you saying it was different before?
Mike Litsch
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hromadka_jay
Posts: 9
Joined: Mon Aug 02, 2010 8:25 pm

Defueling

Post by hromadka_jay »

It started doing this about 2 months after I installed it. It only does this on the 120hp setting. I have had other programmers that added even more power than the predator and never had this problem. It does not do it on the factory setting either.
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mikel
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RE: Defueling

Post by mikel »

If it happened 2 months later it cant be the tune, something must have changed on the truck...
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

tech@diablosport.com
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rydnhi4x4
Posts: 272
Joined: Tue Mar 13, 2007 10:22 pm

RE: Defueling

Post by rydnhi4x4 »

Could be your fuel filter, but when you start running those larger tunes with out lift pumps and other things to the fuel system the truck will automatically start to de-fuel.
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
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