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Old Guy with 87 GT · 07-21-2003, 08:52 AM

the ecu is on the passenger side ,below the dash behind the kick panel

you have to take the readings you get from the air/fuel with a grain of salt when it comes to judging the actualle stoich .......a wide band o2 reading from a dyno run is alot more revealing .........the air/fuel gauge is definatly helpful to determine if your ecu is operating in open loop and doing what it should ,but there's a wide margin of rich or lean conditions that the o2s don't really see

the gauge is a little helpful for determining wide open thrttle stoich ,but only as a method of knowing if there's somthing wrong ......if your stiotch is ok at wide open it'll peg the gauge on the rich side

07-21-2003, 08:52 AM	#6
Old Guy with 87 GT Registered Member Join Date: May 2001 Location: Harrisburg, Pennsylvania Posts: 379	the ecu is on the passenger side ,below the dash behind the kick panel you have to take the readings you get from the air/fuel with a grain of salt when it comes to judging the actualle stoich .......a wide band o2 reading from a dyno run is alot more revealing .........the air/fuel gauge is definatly helpful to determine if your ecu is operating in open loop and doing what it should ,but there's a wide margin of rich or lean conditions that the o2s don't really see the gauge is a little helpful for determining wide open thrttle stoich ,but only as a method of knowing if there's somthing wrong ......if your stiotch is ok at wide open it'll peg the gauge on the rich side __________________ the "not so old",old guy 87 Mustang GT T-top >hanlon t-5, pro 5.0, centerforce clutch ,adj. cable/quatrant ,3.27s ,full 2 1/2 ex(off road H) adj. reg. ,e-cam ,70mm TB, cobra intake ,1.7rr ,ported/milled e7ets w/crane springs ,306 balaced/decked short block w/speed pro forged flat top pistons ...257rwhp/302rwt best et 13.7@102 (4/11 ) '80 Capri (future project,currently collecting parts for 351 moter)