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MetroMPG · 10-03-2012, 11:10 PM

It's going to vary from engine to engine. But I reduced cruising RPM by ~26%. MPG went up by ~5%.

Project 'nerd gear': taller tranny transplant nets +5.2% MPG - MetroMPG.com

) I will put in the convertible. (One of these years I'll get around to fixing it up & putting it on the road).

10-03-2012, 11:10 PM	#224 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,534 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 57.73 mpg (US) Thanks: 4,082 Thanked 6,979 Times in 3,614 Posts	It's going to vary from engine to engine. But I reduced cruising RPM by ~26%. MPG went up by ~5%. Project 'nerd gear': taller tranny transplant nets +5.2% MPG - MetroMPG.com Metro taller transmission swap thread: +5% efficiency gain (taller final drive) - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com That's enough of a boost that I picked up another transaxle with the same taller final drive that one day ( ) I will put in the convertible. (One of these years I'll get around to fixing it up & putting it on the road). __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget