I run an 89 Swift SE-3, I recently bought it and went through the sfr drivers school. I took it off for drivers school because I didnt want to break it being a novice. I just attended srf regional at thunderhill on may 17-18, and I was only putting out an average of 2 minutes flat with a rare 1:58, while all the other FC's were doing close to 1:50's, a whole 10 seconds faster than me. after race 1 I started asking around and noticed that they were all runnning a diffuser. In the next morning we went out for qualifying and i was trying to stay behind another FC's draft, while being behind him I noticed extream turbulance. and even on the straights he'd pull away from me like i was only in a 1600!! i was only barely able to keep up with a 1600 in the straights and was only able to catch up through the turns. Neil Porter took a look at my carburator because my dad (crew cheif, and ex-FA,FC,FF driver) notice it would load up and ran really rich causeing a misfire at the beginning of my race. so i was also using a poorly built carb as well .
Would adding a diffuser remove alot of the turbulance from drafting behind another FC? does anyone know the laptime i should be doing? and do i need to to change front and rear wing settings to complement the diffuser?
thanks for reading and hope to hear your thoughts on this subject!
Peter Gregor