I bought my 98 GTP back in october and I gave it a basic tune up (wires, plugs, air filter, gas filter) and took it to the track. Back in November it did 16:10 seconds at best, the track didn't have addhesive thing that time so the tires spinned when I took off, also keep in mind that my city is at 1500 meters above the sea level.
So, since then I did the U-bend delete, CAI and 185F tstat. I've also fixed some issues with vacuum leaks and I removed the stock spark plug heat insulators which were leaking spark to the manifold.
Last night I took the car back to the track and this time it had addhesive or whatever you call it applied so my tires were not spinning and to my surprise it was running 16:80's, best time it did was 16:50.
Now I didn't expect to see much improvement considering that I've done minor mods to it but I didn't expect it to be running slower either. The car wasn't doing missfire or knocking that I could notice on any of the runs, so I wanted to ask you guys if there's something that I might be missing or checking that could be causing this?
Thanks,
