Well, im probably going to be very vague on this but It seems like my car is losing power. When I replaced my opti I ran a 13.5 and consistant 13.6's... now a few weeks later in cooler air i cant scratch 2nd for crap and the best i ran since then was like a 13.72

I know, theres probably not much to say about this but It just really pisses me off

 

As for the track times dropping what were the 60ft. times on the 13.5 and 13.6 runs compared to the 13.7's. Also what were the mph of the runs also.

As far as not chirping the tires when it shifts maybe the tranny is gettin a little weaker or something of that nature.

 

Yeah, the differences in time may have been because the track was cold. It was so cold at Gainsville this past wednesday that most of the cars in the line up had water condensing on top of them.