Want a louder bike! - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 33 (permalink) Old 11-11-2009, 08:04 PM Thread Starter
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Want a louder bike!

OK I have watched the videos out there and have read what some of you said how easy it was to do. I think I can handle the modification but did any of you have the bike put on a computer to adjust the air/gas mix or did they run fine? I was told by the dealer that I would have to bring it in if I modified the pipes. Just wondering this sounds to good to be true!

Thanks, Bob
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post #2 of 33 (permalink) Old 11-11-2009, 09:15 PM
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I put V&H dual baggers on mine...got rid of the goat's belly....and it has run fine for a couple thousand miles now....great sound..... plugs are greyish...great mileage... no issues


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OK I have watched the videos out there and have read what some of you said how easy it was to do. I think I can handle the modification but did any of you have the bike put on a computer to adjust the air/gas mix or did they run fine? I was told by the dealer that I would have to bring it in if I modified the pipes. Just wondering this sounds to good to be true!

Thanks, Bob
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post #3 of 33 (permalink) Old 11-12-2009, 10:16 AM
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I completely debaffled my stock pipes and the bike runs great without any change to the computer.

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post #4 of 33 (permalink) Old 11-12-2009, 09:48 PM
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I put V&H dual baggers on mine...got rid of the goat's belly....and it has run fine for a couple thousand miles now....great sound..... plugs are greyish...great mileage... no issues
The 900 has a Goats's belly. thought that was the 750

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post #5 of 33 (permalink) Old 11-13-2009, 03:56 AM
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Mine is a 1500

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The 900 has a Goats's belly. thought that was the 750
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post #6 of 33 (permalink) Old 11-13-2009, 05:35 AM
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Whether you drill, debaffle, or swap pipes doesn't matter. 99.999% of the time you won't need to do anything else. Your ECU normally handles a single mod like that just fine. There's a lot of dealers who will tell you you need THEM to readjust or add something if you swap pipes. Just ain't so.

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post #7 of 33 (permalink) Old 11-13-2009, 01:13 PM
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I drilled mine out. do yourself a favor by using a 2 3/4 hole cutter and just leaving a bit of a ring inside the pipes. My buddy cut through the side of his pipe by using a 3". and he is a machinist.
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post #8 of 33 (permalink) Old 11-13-2009, 02:49 PM
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I drilled mine out. do yourself a favor by using a 2 3/4 hole cutter and just leaving a bit of a ring inside the pipes. My buddy cut through the side of his pipe by using a 3". and he is a machinist.
That is good advice. I had a 3" but realized that it was a tad too big for my comfort so I just drilled a lot of holes and used a chisel and hammer to break the pieces in between the holes. I then used a dremmel and cleaned up the edges the best I could. All in all, a slightly smaller hole saw would have been better.

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post #9 of 33 (permalink) Old 11-15-2009, 06:55 PM Thread Starter
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Thanks guys that helped but you are drilling 1 big hole? The web site said up to 8 small holes. Any difference? Just wondering

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post #10 of 33 (permalink) Old 11-15-2009, 06:58 PM
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The small holes are for doing it in stages. You can drill 4 holes, see how it sounds and then go up to 8 if it isn't loud enough. If it still isn't loud enough you can completely debaffle it (which is what the one big hole with the 2 3/4" hole saw is assisting with). After making the one big hole you will still have to stick a broomstick or something in it and wiggle it back and forth for 10 minutes or so to break the pipe and remove it.

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