Just installed the Cobb SF Intake and Access Port. When I tried running Stage 1 93 Octane + the Intake Map, the RPMs would not go over 4000 without the car shaking violently. So now I'm running just Stage 1 without the intake map and the car is running fine. I've tried re-installing the intake map with no luck and the car still will not run right. Just wondering if anyone else has these 2 mods and has run into the same problem. I'll take any help I can get!