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94 miata ems 2500 rpm lean spot

 
Old 02-28-2011, 11:10 PM
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Angry 94 miata ems 2500 rpm lean spot

hey guys i've got a 94 miata with ems. the issue i'm having is at 2500 rpm under load the car goes extremely lean no matter how much fuel it's given. i've logged everything i can think of and can't figure out what would make it go lean. i'll send logs or calibration to anyone who would like a shot at figuring this out. thanks
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Old 02-28-2011, 11:14 PM
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what is your timing at said rpm/load cell?
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Old 02-28-2011, 11:18 PM
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Fuel filter, fuel pump, etc. If it's not tuning, it's a mechanical problem unrelated to your ECU.
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Old 03-15-2011, 10:40 PM
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thanks for the resonses. timing is at 25deg advance. i've checked the pump and replaced the filter. i'm gonna try installing my original intake manifold to see if it changes anything. i'm checking everything and finding little things here and there. nothing has helped yet. hope to have an update soon.
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