Jolting when car shifts with new air filter installed
I take it this is an automatic?
Try disconnecting the negative terminal to the battery for 10 mins. Then connect it and idle the car for 10 mins, then drive it LIGHTLY for another 10 or so.
Disconnecting the negative terminal will cut power to the ECU and it will have to relearn values. Many tuners, when they install mods such as intake, exhaust, headers, etc get their cars ECU to relearn the fuel trims, etc.
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