Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - ---Backpressure in exhaust; good for city bad for highway!---

aerohead · 11-10-2015, 07:35 PM

Here are a couple of ads for leading high performance mufflers

Both have engineered backpressure into their products for low speed economy,then provided short-circuiting for high speed efficiency
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Here,YAMAHA (read Ford SVO engine builder) designs it's 'smart' exhaust,with computer-controlled valving to maintain optimum backpressure under all load conditions

11-10-2015, 07:35 PM	#6 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,319 Thanks: 24,442 Thanked 7,386 Times in 4,783 Posts	Exhaust backpressure Here are a couple of ads for leading high performance mufflers Both have engineered backpressure into their products for low speed economy,then provided short-circuiting for high speed efficiency -------------------------------------------------------------------------- Here,YAMAHA (read Ford SVO engine builder) designs it's 'smart' exhaust,with computer-controlled valving to maintain optimum backpressure under all load conditions __________________ Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/