I have a 01 Bonneville SSEi, and I would like to put an intense level one kit on the car assuming that there are no KR and I can get rid of them. So my question is if I was to put that kit on my car how would it affect my MPG?

I think it all depends on how you treat your newly earned performance. With a proper tuneup it could stay the same or even go up. With me... it went down... I'm a little pedal happy. But if you want performance you'll pay for it somewhere...

If you drive like you do now, your mileage will likely increase.

Good luck though!

Cool I thought that it would hurt my gas mileage, but if there is a good chance that it will not affect it at all then I can’t order that kit fast enough! Thanks for the input.

Not supercharged, but looking at about a 1.5 MPG increase so far between the FWI and the PCM on mine.

Mark