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arcosine · 08-26-2012, 09:32 AM

It will only lean the mixture during open loop, in closed loop it still stoichiometric. Open loop is during cold starting and full throttle, unless you have an error code and a bad sensor..

08-26-2012, 09:32 AM	#4 (permalink)
arcosine Master Ecomadman Join Date: Nov 2010 Location: Chicago area Posts: 1,154 sc1 - '98 saturn sc1 Team Saturn 90 day: 43.17 mpg (US) Airplane Bike - '11 home built Carp line Tour rans - '97 rans tailwind tractor - '66 International Cub cadet 129 2002 Space Odyssey - '02 Honda Odyssey EX-L 90 day: 28.25 mpg (US) red bug - '00 VW beetle TDI big tractor - '66 ford 3400 red vw - '00 VW new beetle TDI 90 day: 58.42 mpg (US) RV - '88 Winnebago LeSharo 90 day: 16.67 mpg (US) Thanks: 20 Thanked 337 Times in 227 Posts	It will only lean the mixture during open loop, in closed loop it still stoichiometric. Open loop is during cold starting and full throttle, unless you have an error code and a bad sensor.. __________________ - Tony