Installed K&N Drop in.

[Motorhead6T5]

I put a k&n in my stock box and removed the air silencer,and removed the hydrocarbon trap. Lost a off idle dead spot and feels like it gained a little way up top,like it wants to rev past redline now. Has a little more aggressive growl but still not a CAI sound. Got about 70 miles on it no CEL,don't suspect it will either. I disconected the battery before I unpluged the air sensor plug,so It reset the ecu. :thumbsup:

[Katana]

You wont see any big difference with that.

[Motorhead6T5]

You wont see any big difference with that. Nor would I expect one, but it will run better than a metal tube,and its cheaper:wink:

[Katana]

Metal Tube?

Oh that's for sure.