misfiring

Hello, I have a 2018 Genesis G80 with 22k miles on it. I have been using the Racechip for around 1k miles and I recently ran into a problem. I felt a big misfire and the check engine light turned on. The performance of the car is absolutely gone now. It is jerky and shaky when accelerating. I...

Hi folks, I'm here to ask for advice dealing with Bank 2 (driverside) misfires which began about two weeks ago, and the car hasn't been driven much since. It idles very badly and I'm afraid to do any damage to the engine. I've instead spent several days reading up on threads here and...