- Genesis Model Type
- Genesis G70
I just installed the new densos high performance spark plugs off the jb4 website so that I can install the JB4 chip. But after I installed it under full throttle my engine sort of jitters. I don't think it is the transmission either but who knows? I have the 3.3t. I don't know if it could be engine knock, misfire, or what? Did anyone else have this problem. Also I may have just messed up the installation of the plugs because I did it myself.