OK guys I got it in on Monday and have had some time to give you my opinion. First off it is a little deeper in sound once you get over 4k, but I'm getting some vibration when I get on it (WOT). Gas mileage I have seen about .5% increase. overall not the worst $50 bucks i've ever spent.

ANy ideas on the vibration?

 

.5%, how the heck did you measure that! lol
Fire a pop charger on that bad boy and giddyup!

 

Just trying to be technical. I went from 20 in the city to 21.

 

my gas mileage went down when i got my intake b/c i have a heavy foot to hear the nice sound. lol

 

Get the JWT pop charger with ur z-tube. I just have it installed and zooom...zooom...it has very aggresive sounds when u rev over 4K rpm.

 

Ditto on the gas mileage, I installed a Fujita short ram and I hammer it every chance I get!