Just thought I'd let you all know my wonderful experience with about 300 miles on the cats now.

After I installed them I drove around about 150 miles and broke them in. I then filled up and drove to work like I normally do.

My drive to work is 87 miles, about 90 percent is highway. I've driven the exact same way in the exact same traffic with the Z for almost a year now. I average 24.4 MPG. This time, I drive to work and fill up again with gas. I calculate my MGP... 27.4 !!!

Wow what a difference. I also checked my digital computer readout and it was actually acurate to what I physically computed. It was a bit colder than normal, but everything else except for the new cats was the same.

The Kinetix cats appear to have given me + 3 MPG... YEAH!

 

wow with me I feel the opposite because Im on the gas twice as much

 

I have the test pipes and have lost fuel mileage even when laying "way" off the pedal. Could not be happier paying that small price for such an increase in performance. Glad you got the increase though.

 

I've seen an increase too, only because i've been a lot more on the pedal lately but see no change in mpg