The other day I was driving my car and as soon as I got to a stop light the car starts shaking and idling really rough. I figured that this wasn’t normal so I pull over to my buddies place and he hooks up a reader to the car and it read “cylinder one misfire”. I then got my car towed to my mechanics shop and my first reaction was probably spark plugs or coil pack. After further diagnosing those both were not the issue. Anybody have an idea of what else it could be? My Supra only has 8k miles on it and it’s frustrating that this already happening. I also have a aftermarket intake, downpipe and tune.