No issues with mine at all. compared to stock mpg.
I have a heavy foot.
I was getting same mpg with stock compared to my volant.
Since my foot is heavy I am getting only 11 to 12 mpg street/highway use.
if I drive long highway trips i can get 14 to 15.
I can tell you after I changed to dual flex a lite electric radiator fans I gained 1.5 to 2 mpg's and for a V8 man its so quiet now. and in cold weather it gets to run temperature much quicker.
I am getting Uprev tuner programer package and will have one of my dyno tunes, tuned for 87 octane economy tune wich will improove mpg with all the mods i have.
volvite wrote:Are there any updates to MPGs or issues from those members who have installed these CAIs?