- Sep 5, 2002
- Ringgold, GA
I bought a 98 Cobra a few weeks ago with an S-trim supercharger. The car has had this current setup literally since 1999. I replaced the old serpentine belt and did a smoke test to check it for vacuum leaks. The car makes 10psi but literally feels like it's making around 300rwhp. I didn't notice fuel pressure slightly dropping while in boost but never heard any signs of detonation and the car had no obd2 codes present. Runs and drives perfect other than feeling very weak. I took it to the track last night just to verify and it only went 82mph in the 1/8th. Any ideas where to start?