You don't feel an increase in power, if you did have an increase, you'd be the only one. I've seen the dynos and the CFM numbers on them. They are for sh*t.

What you are feeling is a result of the torque curve being lower due to an increase in backpressure that the chambered design yields. Backpressure is never a good thing, despite the fact that it gives you the perception of having more "oomph" in the lower rpm band.

2-5 MPG in town, I'll call a resounding BS on that one. That's roughly a 25%+ increase in fuel economy on the higher end of your claimed scale. Ain't no friggin' way...

 

to each his own and I'm glad you like yours..we're speaking from experience, especially in terms of the performance aspect, when you hardly have any mods it's easy to say flows are good, when you start to play with the big boys then it's a different story ...I ran flows, and although better then stock, does not compare to the magnaflow i'm running now...