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alls i'm saying is an 8 cylinder produces more by-product than a 4 in most cases. i watch emission tests all day long and if an 8 cyl needs a tune up or has a lot of carbon in an egr or something, it fails more often than a 4 banger. anything is possible though. they refurbish equipment that is over 10 years old, half the time it doesn't work correctly, so there is a large gray area to pass in.
and on the actual inspection machine's monitor, it specifically states in all cases, "exhaust probe/sample probe," but i guess it is as much a sniffer as it is a probe. i guess you got me - Justin! haha
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