Okay guys i need help bad. I feel like i am going to go insane here soon. Went to the track with the mods in my sig last night and the best run i got was a 9.4 at 76.7mph. It was on a "friday fun night" so the track conditions sucked and most everybody was running low times. But still a 9.4 WTF!! I am hoping it's clogged fuel injectors or bad spark plugs. But i only have 42,000 miles on my car. I am also having trouble with starting it up right after i turn it off. Also, it stalls now when i first turn the car on with the AC on. Is this a fuel related problem or an IAC related problem. My symptoms are rough start-up when hot, stalling now after a burnout and AC on until car is warmed up, and i think slow acceleration in comparison to what it should be.
Here is a video of my run to give you an idea of my run. Im the silver GT. The red one is an automatic with only Shorty headers, Cold air intake, superchip, and cut off mufflers. And i still barley beat him.
http://s59.photobucket.com/albums/g2...ttys020avi.flv

 

I had a similar problem in my 1995 Z28 (sold) and it ended up being a fuel pump. Have you ever had your fuel filter cleaned because that was the culprit in my Z that caused the fuel pump to eventually be inefficient but did'nt fail (I sold it before it most likely did) mainly because they said at the dealer they had to drop the rear end to drop the tank in order to replace the fuel pump. $800K. But it could be a different story in your Stang just thought I would give my 2cents.

 

This is going to sound really stupid, but where exactly is my fuel filter. Im sure i have seen it numerous times, but i just have never thought to look for it. Thanks.