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I just go car back together and was data logging. When I let off throttle, everything looks normal except the rpm on datalog shows rpm climbing instead of falling back to idle rpm range. Even though the motor goes back down to idle like normal, the rpm shown on datalog doesn’t fall back down with it. It climbs a little for a couple seconds then goes back down to regular rpm. Also have a slight miss if that has anything to do with it.
 
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