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Old 02-26-2009, 08:41 AM   #3 (permalink)
dcb
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pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
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like mcTimson said, a lot of vehicles will shut off the injectors when coasting in gear, until some lower threshold speed is reached. I can usually hear it pop back on in the exhaust. Try coasting down from 50mph to 10mph and note what speed the mpg (or gph) reading comes back, using the stock injector delay configuration.

the injector delay is a value that is subtracted from the length of each measured pulse. To account for the mechanical delay of the injector opening. I wouldn't mess with it unless you cannot get the fuel dialed in after a few tanks and careful refill and adjustment procedures.

Can you check one thing for me though? Can you unplug an injector and check the ohms of the injector?
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