Originally Posted by AMGrasoul

Yeah, this is true... but 25% is starting to push it as far as bolt-on without tune AND pushing the physical limits of the supercharger. I installed this at the machine shop, in case he needed to make any adjustments I'd still be right there... but everything fit great and drove great. I could feel it immediately. But I haven't driven it much since then... as soon as I got home I took it apart again the next morning to finish up the passenger side header. Last night he finished up the last of the welds and we wrestled it into place (you can imagine, the fit is a lot tighter than the shorties) but I should have everything bolted together by the end of the night, and if I'm lucky I'll get my datalogger wired up to all my sensors as well (right now it's just AFR, which does me no good during tuning if I can't see the correlating RPMs). Then I should be able to tune and let you guys see the results. I'm hoping either Saturday or sometime next week for a dyno visit.

I do have a boost gauge, but it's an Autometer and SUCKS A$$ (always sticks) so really it's just there for relativity. For example... with my ASP pulley I would only get about 7 psi, then randomly would shoot up to 12 psi. Then I'd turn off my car and it would be stuck at 3 psi... I know I wasn't boosting parked! This thing is such a POS. I'm going to just use my datalogger to measure airflow when it's all wired up. Maybe I'll swap pulleys and do a before and after... even if we can't see PSI's we can see a % of overall change on the MAP sensor voltage, and should be able to get a relatively good idea of how much of a PSI increase it yielded.