Thanks, I'll give her a shot. I installed the 91 tune with MDS off and adjusted the rear gear to match and that alone was impressive. I can't wait to try your recommendations.

 

Is anyone running an aFe (or other) cold air intake with the 93 tune? I was just wondering if there is any chance this will cause a lean condition or if the engine computer will compensate for it... I know Superchips says it is all good to use with exhaust or CAI but I was just wondering if anyone had some real life experience with this/ or had the truck on a dyno to show A/F ratio...

 

Alright, changes are being uploaded into the truck right now. The only thing I was a little fuzzy on was the tire size. I have the P275/60R20s so after doing the math I came up with 33.469 as the tire size. So, I put in the programmer a size of 33.50 since that was as close as it'd let me get.

 

If you have stock tires, leave the tire size option alone.


Sil

 

Just noticed that the new update cured the idle surge problem I was having.

 

Get a tape measure. Guaranteed your tires aren't 33.469 as they sit on your truck. You'll want to re-adjust the speedo.

 

Ok my shift points are set at 6,000. Why am I shifting at only 5500?

 

will the superchips programmes make my truck down shift harder and better? right now when i nail the throttle my truck doesnt act like its down shifting

 

Tire Size Service Description Sidewall Approved Rim Width
(inches) Meas. Rim Width (inches) Section Width (inches) Outside Diameter (inches) Max Load (lbs)
P275/60R20 114S OWL 7.5 - 9.5 8.00 11.0 33.0 2,601 @ 35


Goodyear site 33 inch

 

And I wouldn't be surprised if they're closer to 32.5 mounted, inflated and under the weight of your truck.