[GFXjamie]

So i was at the track on friday and was looking to run some good times. last year ran a 15.1 and was hoping for that or less....

Well i didnt have it my way, and turned out i ran an all time slow of 15.7 @ 88mph....

Since last year i have got an under drive pulley and larger TB along with the FS mandrel exhaust. Im on falken azenis for tires and stock 15" rims for weight reduction. No stereo in the car or spare tire. I was running under a 1/4 tank of gas aswell and consistantly ran 15.7-15.9 with 87-88 mph trap speed.

Now some problems i think i may be having.
- Exhaust leak
- possibly reversed TPS
- Possible cam timing issue
- smaller rolling radius (smaller tires)
- blown rear shocks

Now all of this added together, would it reduce performance that much? I played with tuning and no matter what i did times would only vary by 0.1 seconds at most whether i went lean or rich, advance timing etc.

Now in order to fix my exhaust leak, what i think the problem is, is that when my header was installed, the mechanic used the automatic flex pipe, which is about 1" shorter in length and i dont believe i am making a good seal at the flex as i can hear the leak right under neath the center of the car.

Any suggestions would be great as im kinda pissed about how badly the car is running

Also the car has had a funny idle ever since leaving for the track. revs will bounce all over in neutral from 1000-2500 rpm