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SVT Shelby GT500
P0420 CODE AFTER INSTALLING KOOKS HEADERS AND GREEN CATTED X PIPE.....HELP!!
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<blockquote data-quote="MelloStang2010" data-source="post: 16076173" data-attributes="member: 180084"><p>Just get some spark plug non foulers as mentioned above. I ran them on my old coyote because I was getting the p0420 code even with cats, once they were on no more CEL. Did the same thing with my gt500, longtubes, no cats, and no check engine light. I was able to pass emissions as well using the non foulers and Im currently tuned by lund who will not turn off the rear sensors.</p></blockquote><p></p>
[QUOTE="MelloStang2010, post: 16076173, member: 180084"] Just get some spark plug non foulers as mentioned above. I ran them on my old coyote because I was getting the p0420 code even with cats, once they were on no more CEL. Did the same thing with my gt500, longtubes, no cats, and no check engine light. I was able to pass emissions as well using the non foulers and Im currently tuned by lund who will not turn off the rear sensors. [/QUOTE]
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SVT Shelby GT500
P0420 CODE AFTER INSTALLING KOOKS HEADERS AND GREEN CATTED X PIPE.....HELP!!
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