gnasty1521

iTrader: (7)

Mine is 10.6 average 90% city... That said, I have heavy wheels, A/C blowing, and am most of the time driving normal... One or two mashes of the "slim go button" per tank. I bought it to have a little more fun, but did not anticipate it being this bad on gas. Wife won't even let me get rid of it...

smrr1

same goes for my truck. if you step off in it it's real fun for a split second then the dash starts flashing and the fun is over!

91Z28

You can turn traction control off. I am actually suprised at how good my traction has been from a 15-20 roll in 2wd mode.

smrr1

from a roll it hooks amazing. from a stop is a different story. i know i could disable part of it by holding the tc switch but no need really. it's fun the way it is and the tires last a little longer.

tiffo60

iTrader: (2)

even with traction control off it still kicks in, it will just spin a little more before it decides to take over...

gavin2005

iTrader: (7)

my cousin just bought a 2011 ccsb with 6.2 about a month ago.it does not have afm.he was only seeing 12mpg before i tuned it but it does have a body lift and some 35s on it.he said its geting 16mpg now and he drives it normal.prolly never goes over 50% throttle

nikon2011

my 2011 AWD Denali gets 15-16mpg city/highway driving. All highway nets me 18-19mpg. Not bad? IMO

Jeffyboy

My 2010 CC 4wd usually averages 15.5 per tank. I got 18.4 on my last 4-hour highway trip with the cruise set at 75. My question is, why not do the AFM in the trucks? Wouldn't it have helped GM's overall economy rating?

LBSBLOWN

iTrader: (1)

From what I see in the tunes the 2009 has more ignition advance in PE mode:
at 5200rpm 4 deg more
at 5600rpm 7 deg more
at 6000rpm 9 deg more
also the shift rpm is 200 rpm more at WOT on the 2009.

Jeffyboy

Have you guys noticed, too, that the SUV 6.2s are tuned for 87 octane while the trucks want 91? They're rated at the same power level, too. Seems strange.