Originally Posted by Marcs335
So I'm having problems with the JB4 piggy back unit. Mis-firing. Im going to take it out. Anyone else had this problem? It's turned me off tunes all together. I would hate to damage my car. It only plays up with the tune on. Standard mode it works perfect. Easy fix = rip it out!
dude a little info goes a long way.
1. is this happening ALL the time, or on the track after a couple of laps?
2. how many k's
3. how many k's on the plugs
4. how many k's on the coil packs
i had an issue the first time i went to the track, but quickly worked out (with a little help
) that a new set of plugs and coil packs and all good.
A splash of meth never hurts either.