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smog
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T O P I C R E V I E W
mysnakebyts
Member # 4099
posted
car failed smog test good on everthing but nox 1000 at 15 and 25 is it cause of bassani x pipe? 96 cobra anyone have problems passing with x pipe with 2 cats should I put 4 cats?
JoeT
Member # 298
posted
not a smog tech but NOx too high is often
EGR
too much timing
cats
check EGR operation 1st
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