Ok so i was at the tracks yesterday with my buddy he just bought a 1990 crx si with a zc swap. He wanted to run it and see what he ran now when he ran his reaction time was bad but not that bad. I dont have the slip on me right now to tell you guys but he ran a 18.5 the first time missed 2nd the 2nd run he ran a 17.7. Now why is his car running so slow His o2 sensor is not wired up could that be where all the power lose is we have checked everything else he just bought the car. Please help thanks. Dan