Just got my new gears put, makes a huge difference! Actually, gas milage is about the same, and highway driving is great. The only thing I am kinda disapointed with is that I seem to have lost a little bit of power on takeoff, when they re-tuned my vehicle to the gears I lost about 10 HP at 2100 RPM's. I thought the gears would give me a better takeoff, strange. I think the place that does my work and tuning is pretty worthless, so I have found someone else to trade my Xcal1 in for the Xcal2 who also says he has some kick hiney tunes for the v6. We shall see how that works out, all in all I am happy with the gears. The are great in the mid-range RPM, especially on the highway when you want to pass! Makes driving a lot of fun... Also, had it on the dyno, with MMR CAI/Inlet Tube, and Magnaflow axleback I am at 198 RWHP/236 Torque.

 

pardon my ignornance but do you have a stick or an auto?

 

I have an Auto

 

thanks! I do as well and have been pondering this upgrade as well as a t-loc.

 

ok my next question how much did the install cost?