Welcome.:thumbsup: I'll move this to our C4 section so someone can help you with the rough idle.:thumbsup:The Torch said:I've got absolutely no experience with C4 but at 120 clicks there are several things the happen to more than just Vettes. Some thing to consoder are: dirty injectors, burned out plug(s), cracked plug wires, burnt valve(s), timing off. We'll get someone around here htat is smarter than me.
And WELCOME to DC