okay want to know if my car ahs a catback or just a flowmaster muffler. What is the circumfrence of the piping on a 3 inch system? the pipe look kind of new but cant tell jsut by looking, help me out guys thanks

 

3" is roughly 9.42" around

Pi*3"

 

Stock is 2.75" jfyi. Circumference= diameter*3.14. I'm too lazy to do the math though.

 

thanks guys I am lazy too and dont want to do math

 

BTW if it is stock pipes with justa FM muffler should i upgrade to 3 inch or just put a cutout on and be done? what would flow better a full 3 inch catback or that setup witha cutout and stock pipes and FM muffler?

 

Just do a cut out. If you search on Flowmaster, you'll find a lot of info, most of it not very favorable.

 

Your name is TexasTech and you are too lazy to do one multiplication problem?

 

LOL!

 

no dude I did the multiulcation, I jsut forgot the formula.