supercharger pulley vs. crank pulley
I bought a 181 and it seems to have yielded similar results to my 185. With my 185 i could immediately jump Brian(BDJ's Racing) by 1-1.5 cars, but he would always start pulling back at around 120mph or so. He has similar mods and a code 3 pulley. Then i swapped to the code 3 pulley and we were dead even. Now i have the 181 and its the exact same thing, i pull an instant 1-1.5 car lenghts then at 120mph or so he starts to reel me in. We always start from a 50mph 2nd gear punch, we have the "ready-set-go" down to an art, so all is fair. The 1/4 mile is over by 120mph so the crank pulley is definitely superior to the code 3 for 1/4 mile times, but id still like to know whats happening here. Why does the crank pulley peter out at top end while the code 3 keeps pulling strong?
First i would like to ask other members to try and duplicate my findings. I always assumed that the bigger crank pulley created higher IAT's at the top end than the code 3, or that maybe the ecu was pulling timing. I am no longer so sure of this. BTW, AFR is fine as all this occurs.
Last edited by 240M3SRT; Jan 24, 2010 at 03:00 PM.