I have the k&n because i didn't want to cut my car. Here are some threads about k&n typhoon (dynos included):
K&n dyno results
K&N Typhoon Release
SRI get a bad rap, but members who have dyno'd the k&n's have shown gains. Besides you don't have to remove the bumper.
Here is an article I saw on Import Tuner. They dyno'd the stillen and I believe it got 7 hp or something like that, but I know other members got great gains.
2009 Nissan 370Z Touring - Mobil 1 - Power Pages - Import Tuner Magazine
Quote:
Originally Posted by Red__Zed
Dyno's are always misleading with SRI's though, since you're usually dealing with heat soak that you would never see in a moving vehicle. Watch your IAT's on a dyno, then watch them drop significantly when you get out on the road.
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Yeah, I agree. Wouldn't your car flush out the heat while its moving?