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tbirddillon · 04-06-2009, 10:30 AM

Does A 200-300 Rpm Difference Have A Signifigant Affect On Fe. When I Am Going 55mph It's About 1500 Rpm. When I Hit 60 It's Then Around 1700-1800 Rpm. I Know It Will Make Some Difference I Am Just Curious As To How Big Of An Impact It Has.

04-06-2009, 10:30 AM	#1 (permalink)
tbirddillon EcoModding Lurker Join Date: Mar 2009 Location: Delaware Posts: 12 The Cat - '92 Mercury Cougar LS 90 day: 18.5 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	Fuel economy And Rpm Does A 200-300 Rpm Difference Have A Signifigant Affect On Fe. When I Am Going 55mph It's About 1500 Rpm. When I Hit 60 It's Then Around 1700-1800 Rpm. I Know It Will Make Some Difference I Am Just Curious As To How Big Of An Impact It Has.