Hey all, I took my car into a local tuning shop to get a baseline dyno done. They are using a Mustang style machine. Another member ( Velose) also got his car done there so I figured it would be a good comparison. Well my car came in at only 302 peak HP. I have a B&B cat back w/ a res. and a cone style air filter instead of the stock air box. Velose's car stock, no mods came in at 326 peak HP. So "WTF" is wrong with my car ???? The tech that did the dyno said that my cone air filter may be the problem (already in the trash). I noticed when we were done that my heater and rear defrost was on, would that zap any HP? Looking for some answer begfore I put my Maggie on, so please chime in with your thoughts.