Cool Bolt-On Test/Review Video
See the video in the above thread. The overall numbers seem slightly high (284 baseline), but the shop gained 42 whp with a stillen intake, exhaust, and uprev tune. I'm not sure, but I think he also had a stillen HFC also (in the video you see them removing the stock cats)...However, at the end of the video they showed what each component gained, and the Stillen CAI yielded 6.2 whp gain by itself. This is the only piece by piece dyno I've seen that shows how much you gain from each mod. Now, I'm sure if they dynoed the intake first before the exhaust it may have gained more by itself, but like Jordo has been saying all along, the Stillen intake, unless it's the only mod on the car, is no better than the hose/drop-in mod.
Just go with hoses and drop-ins....