Im adding a hi flo cat to my exhaust system. would my mpg go down cuz of it? Im only adding it because im heading to germany and im trying to be more eco friendly and to turn down the volume a bit.
I have to disagree with you on that.WOW this is the first time ive seen people argue against adding a cat!
Add a good highflow cat for a few reasons.
1, enviroment will love you
2, it WILL quite the exhaust down
3, it will NOT hurt your mpg, 1-2hp decrease at most
4, less hassel when getting inspection done.
Were talking about adding a cat to a system that does not have one. That will not open the exhaust up anymore.I have to disagree with you on that.
I put a magnaflow HFC on my magnaflow exhaust. It opened it up alot more, much louder, and added horsepower. MPG for me havent got worse, maybe even got better. Im still gettin around 430 miles every tank (mostly highway)