my car, completely stock as it left the factory dyno'd in at 97kw @ wheels on sst's dyno, with just one of jash's cat back CRAP exhausts I went to 115kw's. With a trust fmic, blitz dual sbc set to 12 psi I've gone to 175kw, used the same dyno everytime. given that the runs were done on different days, different air temps etc etc etc... it gives me a rough idea of my gains for money spent. My dump+front pipe are letting me down though, as my car drops boost immediately around 5500rpm, doesnt tail off just drops straight down to 9psi. dump+front pipe are next on the mod list.