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nemesis · 10-04-2009, 02:09 AM

The reason I thought of exhaust, is because of the intake, long runners give you more bottom end power ( better mpg) and short runners give you great top end hp ( worse mpg).

10-04-2009, 02:09 AM	#4 (permalink)
nemesis EcoModding Apprentice Join Date: Jun 2009 Location: stl Posts: 106 rusty - '00 mustang coupe 90 day: 24.31 mpg (US) cbr929 - '00 cbr929 fast 90 day: 39.54 mpg (US) Porshe - '06 zx10r 90 day: 37.84 mpg (US) Thanks: 2 Thanked 5 Times in 3 Posts	The reason I thought of exhaust, is because of the intake, long runners give you more bottom end power ( better mpg) and short runners give you great top end hp ( worse mpg).