Kenne Bells website says Longtubes do nothing for performance?

[SilverSpy0]

Ive decided to not go with the KB. Im ordering a hellion turbo kit

Good fuckin choice right there.

 

[Jays04mach1]

Im probably ordering a KB supercharger next week. I just bought Long Tubes and an O/R midpipe.

On KB's website it says that Long tubes are a waste of money when using their superchargers. Literally it says that they have "0 rwhp gain"

This cant be true...can it?

Should I sell my Long Tubes that I just bought?

I suppose the next thing they'll say is that ported heads are useless too?