went to the track today and ran best of 13.8 @ 99.7mph w/ 2.04 60'
last year went, and ran a best et of 13.2 @ 104.5mph w/ 2.00 60'
weather had no effect, was cooler today than when i went last year, and also traction didn't seem to be a problem
mods i have are mac headers, off-road Y, mac 3" catback w/hooker muffler,
underdrive pulley, K&N CAI.
since the 13.2 @ 104.5, i've put in an slp clutch, TB bypass, OVC taylor 8mm wires, ngk tr55 plat., fuel filter.
friend of mine hooked up his hypertech, and showed bad d. side O2 & between 3 & 5 degrees of knock retard. ( is this enough to slow my car down that much)
also, someone said the clutch may be slipping at high rpm's, but if it's grabbing strong enough to pull off 2.04 60's w/ stock rubber, is that still a possiblity?

any opinions would be greatly appreciated( don't know where to start, car sounds ok to me )

 

If im not mistaking O2 sensors dont run the engine at WOT anyway. Make sure you plug wires arent arcing or slightly burned somewhere.

 

If you did plug wires you better check em all! I bought my car and it was running very poorly. I bought new plugs and wires and a brand new opti! Turns out that 3 of my plug wires were worn very bad. 1 was actually showing metal!

 

If it were a plug wire arcing or burnt somewhere would the car not run be running very rough? There seems to be no sign of rough running or anything like that ie.shaking, excessive backfiring, etc.