Quote Originally Posted by Knappster View Post
The lift will effect the mileage a little but with a 3.7 you should be getting a little better (not much) than that. Other factors do play into the mileage like the terrain, weather and they type of fuel you are using.
UPDATE........

I have found out that, from that other forum, I have made a "NOOB" mistake. I was not aware that I can reset the mpg display, so I've been riding around with older readings. I have since reset it and its reading around 17.5 city.

The terrain is flat land (s. Florida), and I've been using 89 octain middle grade fuel.

Do you know if a CAI and/or exhaust will improve mpg on a 3.7L?