Page 1 of 1
Defueling
Posted: Sun Oct 03, 2010 7:37 pm
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.
RE: Defueling
Posted: Mon Oct 04, 2010 10:30 am
by mikel
are you saying it was different before?
Defueling
Posted: Mon Oct 04, 2010 12:57 pm
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.
RE: Defueling
Posted: Mon Oct 04, 2010 2:05 pm
by mikel
If it happened 2 months later it cant be the tune, something must have changed on the truck...
RE: Defueling
Posted: Fri Oct 08, 2010 7:54 pm
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.