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99clipsgst · 07-22-2008, 05:19 PM

I know that on my eclipse when I got rid of my cat and put a 2.5" downpipe to a 3" cat back system I gained about 1.5 mpg.

07-22-2008, 05:19 PM	#12 (permalink)
99clipsgst EcoModding Lurker Join Date: Jul 2008 Location: Orlando FL Posts: 22 Altima SE - '07 Nissan Altima 3.5 SE 90 day: 22.72 mpg (US) RSX-S - '02 Acura RSX Type S 90 day: 29.76 mpg (US) Igloo - '07 Nissan Quest SL 90 day: 17.5 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	I know that on my eclipse when I got rid of my cat and put a 2.5" downpipe to a 3" cat back system I gained about 1.5 mpg.