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Old 11-22-2019, 12:49 PM   #22
linuxman51
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Join Date: Dec 2002
Location: mont, AL
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if your afrs are diving below 10, it's entirely possible your gauge stops reading and they're somewhere south of that even. you can absolutely drown out power at that point, so I wouldn't assume it's pulling timing due to knock. I would sooner think it's heading towards misfiring due to afrs.

why pull plugs- you got another way to get an idea of what's going on in there? what if you have 3 good injectors and one marginal injector? it may be fine at idle and cruise (low pw) but may have issues elsewhere.. not going to see that on a gauge.

as far as getting the tune right for your setup? you pretty much have to tune it yourself, and see where it's going on the map and what it's doing. far easier to do that on a dyno than on the street, but not impossible.
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