flowmaster muffler question

[blackout93]

im thinking about getting a flowmaster muffler, would it decrease or increase my mpg?

 

[CommanderSnarf]

im thinking about getting a flowmaster muffler, would it decrease or increase my mpg?

Well that would depend on how you enjoy a muffler. I put on my exhaust and saw my mpg drop due to my heavy foot, the general consensus is a couple mpg in the + direction though. I found it to be negligible. You usually don't put a muffler on there for mpg, its more for sound and air flow.

 

[blackout93]

Well that would depend on how you enjoy a muffler. I put on my exhaust and saw my mpg drop due to my heavy foot, the general consensus is a couple mpg in the + direction though. I found it to be negligible. You usually don't put a muffler on there for mpg, its more for sound and air flow.

oh okay i understand. mine is all rusty and i wanted to replace it and i mainly didnt want my mpg to drop dramatically

 

[Jason94sport]

negligible