This is 2nd time I've done the switch first time I lost .10 with weight and suspension both. I have a few other things to get it faster, changing from the 34.5's back to the 33.5 hoosiers .04 there, conv is stupid loose because the car wouldnt go straight/hook at any track. 6800 stall falls back to 6200 and sits there for .50-52 seconds after shift, I have a 6200 TSI 9" spragless to put in it. It went 4.67@147 in 3200ft of air and 91 degrees. Could be the most tire shaking/spinning car I've ever drove, hope the suspensions take care of this issue which I am sure it will. I'd like to settle it back in around 4.75@145