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Good Exhaust Size for an N/A

3K views 28 replies 8 participants last post by  rcmdesign 
#1 ·
So the stock exhaust system I believe is 2.25" on an N/A car. I think I might take it to a local stainless steel exhaust place in town and replace most of the exhaust system, minus the cat of course, with bigger tubing. Two questions:

What size should I get, 2.5" or 3" exhaust?

Should I get the intermediate muffler thingy removed and just leave the cat on the system and the rear muffler? Or will this fail emissions?
 
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