Suspect running rich!

coyote_dc5

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I've been running my teg with current kpro map now for a fair few years with identical mods. For some reason this past few weeks she's started popping or back firing when I put foot back on throttle after engine braking. I can almost make it happen by just coming off and on throttle. This is a new feature and although sounds quite cool it's a characteristic of over fueling. I've also noticed when I boot it there's a fair bit of what I can only describe as murky air like browny colour which I also think is fuel mixture coming out the exhaust. Question is how on earth that could have occurred as I've not changed a thing. I'm considering getting some new injectors soon anyway and getting a map tweak so guess I'll know at that point. Guess it's safer running a little rich that too lean just might be robbing myself of some pennies

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