i think the catalytic converters are clogged has new egr calve and sensor new wires fri ecindary air injector module code still says incorret flow was gonna hollow out the converters but herd that might cause fuel system prolem also tod tp try spark plugs hollowing out the conberteres is a temoray fox but want to make sure its not gonna damage anything else not doing thid for off road use just till i can replace them