Catalytic converter - Harley Davidson Street Forum - Street 500 and 750
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post #1 of 11 Old 09-04-2017, 08:14 AM Thread Starter
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Catalytic converter

Does anybody know if I can remove the CAT and install my Vance and Hines muffler in it's place?, or will it upset the engine??
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post #2 of 11 Old 09-04-2017, 08:15 AM Thread Starter
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Street Rod 750, 2017 model ?
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post #3 of 11 Old 09-04-2017, 01:06 PM
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Street XG750 CAT removal is easy. Don't even need to pull the header. Remove exhaust pipe. Drill CAT scrape out the rest vacuum out what you can start it blow the trash out put pipe on done.
Next question: no it will not effect the way it runs.
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post #4 of 11 Old 09-05-2017, 09:10 AM
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I live in missouri and we have to have annual safety and emissions done on our vehicles. Would this effect the emissions testing?
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post #5 of 11 Old 09-05-2017, 09:26 PM
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I live in missouri and we have to have annual safety and emissions done on our vehicles. Would this effect the emissions testing?
This would depending on if they test exhaust with measuring equipment of just look at it. If they just look at it NO.
If I was concerned at a test I would then just by a factory header and have it to just bolt on for the test. It is no big deal to swap out a header on the Street.
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post #6 of 11 Old 09-06-2017, 08:48 AM
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This would depending on if they test exhaust with measuring equipment of just look at it. If they just look at it NO.
If I was concerned at a test I would then just by a factory header and have it to just bolt on for the test. It is no big deal to swap out a header on the Street.
I am not actually sure if they measure the output of the exhaust. I know on cars they thoroughly check for leaks and to make sure you have a cat and muffler. i will have to look into that.
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post #7 of 11 Old 12-25-2017, 07:49 AM
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How did removing the cat material affect the heat in that area of the pipe? That would be the only reason why I would remove it.

'06 VRSCR
'10 XR1200
'14 FXDL
'18 FXFBS
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post #8 of 11 Old 12-25-2017, 10:15 AM
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How did removing the cat material affect the heat in that area of the pipe? That would be the only reason why I would remove it.
Removing the CAT will always reduce heat in the area. A CAT works by causing the exhaust to get much hotter and in theory burning off gases.
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post #9 of 11 Old 12-25-2017, 10:49 AM
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I'm thinking of buying a second set of head pipes, cutting out the cat section, find a piece of stainless steel pipe that fits and having a guy at work weld it all up.

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'14 FXDL
'18 FXFBS
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post #10 of 11 Old 12-26-2017, 06:27 AM
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I'm thinking of buying a second set of head pipes, cutting out the cat section, find a piece of stainless steel pipe that fits and having a guy at work weld it all up.
You are making this much harder than it is on the Street. Remove you exhaust pipe ,look in side head , there is the CAT you can drill it then scrape it out with out cutting the header. Clean it out good and out what ever pipe you want on it. Buying a header with a CAT in it is not cheap. All that cutting and welding is just not necessary . The CAT is tough but you can get it out.
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