rayst@chilitech.net

Just happened to think. On the prior Chev. 454, I did change the O2 sensor every year. The "check engine" light did not come on. But MPG would decrease by apx. .9 mpg, after the change it was back up to normal. I found this one time after the light did come on and my mileage was dropping by about 2 + mpg.

Just a couple of comments on MPG I now have a 2005 Cruise Master, 36' on a workhorse W-22 chassis. I have added the short Banks exhaust and a KN air filter. My TOAD weighs 3500 lbs. I average 8.7 MPG, with my best ever 9.3 MPG. My prior MH ( 30' ) had a Chev. 454 on a P-32 chassis. I had the full Banks exhaust, Hyper-Tech chip, and the Jackobs performance ignition. My TOAD then was a SUV at 3800 lbs. I averaged 10 MPG. Some additions do work, but a lot depends on how one drives. When I added the Hyper-Tech chip, it boosted performance and if not carefull I would drop in mileage. It's my feeling that the best bang for the buck, is the Banks exhaust system.