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jimkelly |
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Delaware USA ![]() ![]() ![]() ![]() Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region ![]() |
you fabbed up a set of he's thru a cat and then thru a muffler.
hypothetical - if the exhaust read 700 HC & 7.00 CO - what woud it read with cat? jim Attached image(s) ![]() |
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orange914 |
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http://5starmediaworks.com/index.html ![]() ![]() ![]() ![]() Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California ![]() |
i'd expect the high h.c.'s are high due to the high (rich) c.o. mix. lean out the mix (c.o.) as much as the h.c.'s will allow, stop at the low point before the h.c.'s go back up. h.c.'s are basically a misfire/partially burn fuel... either a lean or rich.
i've had cars fail with every component operating 100% except for a lazy cat that would not pass. a new cat does wonders. the big disclaimer here is to have everything else solid. the air cooled engines i've smogged have to be leaned down so much they sound like shit. the trick is to get the h.c. sweet spot while choking back the mix (c.o.) get that and a (good) cat (IMG:style_emoticons/default/smilie_pokal.gif) mike |
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