Originally Posted by Welander
I've left the car at the tuning shop today, according to them it could be the spark plugs, they came to this conclusion as I´ve had the "check engine" light on since I first encountered “the shakes” this weekend, and according to the tuning shop the codes indicated misfires, so I’m getting new ones as we speak. I will keep you all updated.
There are so many wires involved, do you think one of them may not positioned correctly during the removal/install process of the ECU? This has happened to a few people on the forum and they found a contact issue with one of the wires. Most pushed down on all wires involved to make sure they were seated properly as well as checked all plug-ins.