Tuning the NBS Chevy trucks
Posted: Sun Oct 14, 2007 3:10 pm
07 Silverado with VMax,cat back exhaust system and intake.
Currently using the U7194 on the 87 tune,due mainly to gas prices.
Had the tuner on 91 tune before for a bit but did not really feel any performance/gas mileage gains so went back to 87 octane.
I've been playing around with logging a bit and the numbers recorded don't seem too bad.
LTFT's are a bit all over the place at cruising speeds(probably due to DOD) but at WOT I get a consistent .78.
Cruising the LTFT's bounce from -3 to +3......
Air/Fuel ratio is at 14.75 cruising and drops to mid 12's at WOT.
The U7194 does not get much more than minute and a half of log time which is not great.
So anybody else out there playing with the NBS Chevy trucks??
And if so what have you done with it??
Currently using the U7194 on the 87 tune,due mainly to gas prices.
Had the tuner on 91 tune before for a bit but did not really feel any performance/gas mileage gains so went back to 87 octane.
I've been playing around with logging a bit and the numbers recorded don't seem too bad.
LTFT's are a bit all over the place at cruising speeds(probably due to DOD) but at WOT I get a consistent .78.
Cruising the LTFT's bounce from -3 to +3......
Air/Fuel ratio is at 14.75 cruising and drops to mid 12's at WOT.
The U7194 does not get much more than minute and a half of log time which is not great.
So anybody else out there playing with the NBS Chevy trucks??
And if so what have you done with it??