View Single Post
Old 12-02-2012, 10:38 PM   #11 (permalink)
Ecky
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 5,075

ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)
Thanks: 2,902
Thanked 2,560 Times in 1,586 Posts
You might see a MPG loss by swapping to a larger pipe, and probably no power gains either with the stock intake manifold being the limiting factor. A new muffler would be entirely "cosmetic".

  Reply With Quote