hey i just searched and really didn't find the answer in the prelude archives. I know about the o2 sim. but i am wondering if the no fouler trick or the blox cel eliminator adaptor will work on a 01 prelude? if so will my gas mileage remain the same if its no throwing any codes from the test pipe?

 

It works well enough to allow me to pass emissions with a test pipe. That means no codes. I think gas mileage should be the same since, correct me if I'm wrong, closed-loop fuel adjustments are made based on the pre-cat O2 sensor.

 

gotcha