i Just put on a new set of pacemakers and a redback cat and a lukey turbo muffler.. after about 100km of travel the car runs that rich that it chokes out the motor when i looked at the wiring going to the OS it runns straight up from it fairly close but it cann't touch the extractors.. the wire has no melt makers on it or anything could this be causing my problems or should i look at the rings or something different as the exhurst is the only thing i have done lately