Just chiming in wondering if my car is running what I should expect.
2010 GT stock 5r55s trans. (156,000 miles, so maybe my powertrain is a bit worn out?)
JLT 3 cai
CMCV delete
UDP
Longtubes, cat delete, factory midpipe with black widow race venoms
4.10's
Properly tuned by a local shop. Made 308hp and 310 tq.
275/40/18 continental extreme contacts (but are 4 years old already)
Ive also got poly/roto-joint LCA's, UPA, panhardpar, and poly top diff bushing.
Just yesterday (730" elevation 65-75 degree day) ran it close to 20 times down the strip, best pass was a 13.06 @ 101.8mph backed up with my 1st pass of the day which was a 13.08 @ 102.2mph. I only got 1 60ft time which was on my 1st run which was a 1.900, the rest of the day they weren't working. was launching anywhere from 1700-2100 rpm. my 13.08 pass I launched at 1700-1800 rpm, my 13.06 pass I think I was very close to 2000rpm. I dont know how much more rpm above 2100 I could go before the tires would start rotating.
The last time at the strip my best was a 13.59 @ 100.6mph, but that was just on a Bama tune and I didnt have the CMCV delete, UDP, and still had the stock exhaust system.
I feel like I should be seeing a bit better time? To be fair we had a head wind yesterday, up to 30mph and I do NOT like the trans tuning that Bama did, acts VERY weird IMO. I also had LCA relocation brackets but I bent them due to forgeting to put 1 bolt in on them so I took them off for the time being, resulting in me getting wheel hop maybe 10-15" out on some of my runs. If I had either my relocation brackets or didnt have the head wind Im sure I wouldve broken into the 12's.