[MUSTANGGT06]

I installed 4.10 FRPP gears and have not improved my ET's. I have a 06 Gt with an automatic transmission. The last time I ran the at the drag with my old 3.31 gears was about 2 yrs ago and approx 40k less miles. My times where between 2.1-2.3 from 0-60 ft. and 9.1-9.3 in the 1/8th. I took it out for the first time yesterday withthe new gears and I am still running the same times. The only thing that is different are the tires sizes, 275-50-17 with old gears to 255-50-17 with new gears. Also, I took my Magnaflows off and had the car straight piped. It sounds good, but will it cause that much in the ET's. My brother said that the 0-60 ft times are terrible and I should be picking up any where from 2/10th to 5/10th with the new gears.