I was planning on using a single 3" inlet 80 series on my car, but there is a guy locally who has a single 2.5" in. Is there any difference on the inside of the muffler or will using an adapter from 3" to 2.5" right at the muffle be just the same?

Thanks for any help you guys can give me.

 

There isn't any difference on the inside, but IMO, you'd be a fool to get 2.5" over 3".

 

Well the only reason for my foolishness is that the 2.5" is $70 and the 3" is $100.

Think there will be any performance difference or just the fact that its a 2.5" muffler where a 3" should be?

 

The 3" is $80 from summit and jegs. No shipping either.

 

coo

 

yep, there would be a difference. a half inch difference on the inlet would definate make for some different hp numbers at the end of the day. glad youre going with the 3 inch.