Guys, first of all, that MilkywayM16 guy that came in was my little brother. He likes to read these boards from time to time, and stumbled across this thread. It was nice of him to try to "stick up" for me like that, but I was not happy when I found out because I knew exactly what would happen (he would get banned, and I would look like a fool).
I might not have those other runs' timeslips anymore, but I'll check when I get home from work. I do have a more recent timeslip that I got at Beaver Springs Raceway out in Central PA after I put on the throttle body / plenum and catback. That run was done on a hot, humid day, and Beaver is known to be a slow track. My best that day was another 13.6 but at 104 mph (thereby confirming the TB/plenum did something lol).
Temperature seems to affect my car a lot more than other cars (non-mustangs) I've ridden in, so I don't think low 13s are unreasonable if I get a chance to go on a cool day this Fall. Like I said before, I have a tune (for 93 octane), and that could account for the apparent excessive power my car seems to be producing.
Still, I don't see how my car could be making even close to 270rwhp the way it sits, seeing as I got it dynoed before the tb / plenum, CAI, catback, and drivetrain mods and it put down only 240 rwhp and 280 rwtq. I still have that sheet, but it's up at my apartment at school (I'm home for the summer on an internship).
I don't remember whether those numbers were corrected or not, but I do know that it was a hot day and the dyno operator forgot to use fans to cool / supply air to my engine bay. My buddy got dynoed right after me, and he picked up 10rwhp from using the fan lol. Judging by my "seat-of-the-pants meter", and based off of how much power I put down before and what the additional mods are "supposed" to add, I think I'd put down around 250 rwhp and 290-300 rwtq if I got it re-dynoed as it sits.
Anyway, I feel that this thread has really gotten off-topic; it's supposed to be about how the new S197s compare to our cars. If you guys want more information / timeslips / whatever regarding my car, feel free to bump one of my old threads about the topic or shoot me a PM. Alternatively, I (or one of you) could create a new thread where we can discuss this in further detail.
EDIT: Another thing to consider is weight. My car weighs 3300 pounds on the street with a full tank of gas, jack, spare, assorted junk (should be a little less now due to additional weight reduction), and I only weigh 160 lbs. This would make my car a little lighter than most automatic New Edge mustangs, and further helps explain the discrepancy in performance.