I'm w/Scott on this, the superchip tuner gave a performance benifit all round. Granted Torque Magement has been a sore spot but shifts are harder, the timing advance of a 91 tune is a must if your getting into cams/heads.

 

Yes Mango you are correct - You must use 91 - I tried the 87 and noticed a slight difference but once you use and set to 91 , there is a noticeable difference. Actually, I buy the gas from Sam's and they only have 93 octane.

 

Well I am going to Dyno tune mine with the Superchips and see the results. I beat my car hard and I cant feel a difference. Raising the shift points I think has made is slower because I used the 0-60 timer and I went from 5.8 or so to 6.2... Now I didnt say that this thing is worthless I just said for me its not worth it unless you are serious gear head. I just think that the most useful parts were the tire size (wich was set to 26 and that is the wrong size for the stock tires!!!) and the speed limiter adjuster.I am testing mine this Wednesday so I will see the results myself. I wonder if you feel more if your car is stock? I have shorty (SRT8) headers and no cats....