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Use one Catalytic Converter on Y pipe?

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Old 09-26-2005, 11:32 PM
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Default Use one Catalytic Converter on Y pipe?

Heres a dumb question but I am curious...

If I am having a high flow y pipe made and want to use a high flow catalytic converter can I put a single high flow cat at the end of the Y pipe instead of using two? Would this help or hurt exhaust flow using one instead of two?

Thanks,
Lane
Old 09-27-2005, 12:14 AM
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i wonder if it will pass visual emissions. Because i may need to pass a visual if the cops around here get assholish and pull out the mirrors.
Old 09-27-2005, 12:19 AM
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Im not sure about emmissions but it will hurt performance. W/ 2 converters each only gets exposed to half the exaust. But w/ 1 converter you would be running all the exhaust through 1 converter which would be ALOT more restrictive.
Old 09-27-2005, 12:44 AM
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It will restrict the flow, but it will pass a visual, as long as you have a cat they shouldnt worry. When a state trooper pulled me over he only looked for one, but I didnt have any, lol.
Old 09-27-2005, 07:23 AM
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Cats are pretty much useless that far back, they don't get hot enough to work properly. Technically, the cats have to be in their stock location, it all depends on how **** the person looking is.
Old 09-27-2005, 09:13 PM
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alright. sounds like its two cats or none. Thanks for the replys!
Old 09-27-2005, 09:19 PM
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What about just running the heat shields of one cat, do people usually really know to look for two?




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