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CVO Technical => Intake/Exhaust/ECM => Topic started by: Al Spag on May 15, 2007, 09:44:11 PM
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Has anyone attempted to modify the stock mufflers on an 07 FLHTCUSE2. I want a better sound, but like the stock style .
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Check Out this thread:
http://www.cvoharley.com/smf/index.php?topic=10505.0
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Ive seen a number of them with the Cats removed they sound good and flow much better, Pumba had a thread outling a novel method for removal that didn't require a core drill.
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Thanks Dart!
I have about 700 miles on my de-cated '06 CVO mufflers and am very pleased. I was able to keep the free flow I had in my previous 1-piece SE mufflers (real rappy sounding pipes) with a much toned down sound. If I had to be picky I would like just a touch more volume, but the sound they do make when I get on it, is deep and growly (I know not a word). Bike runs great with no seat of the pants loss in torque at all, possibly a gain. I am running mine on a carbed 88" TC with SE AC, and am very pleased. One note: while cruising, the bike is very easy on the ears, yet it has this kind of low droning sound, kind of like a turbine jet engine. I actually think its pretty cool.
And somebody in the past asked about yellowing. Nope not even a hint.
Easy process, let me know if you are interested in the procedure. Cheep and easy.
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Thanks Dart!
I have about 700 miles on my de-cated '06 CVO mufflers and am very pleased. I was able to keep the free flow I had in my previous 1-piece SE mufflers (real rappy sounding pipes) with a much toned down sound. If I had to be picky I would like just a touch more volume, but the sound they do make when I get on it, is deep and growly (I know not a word). Bike runs great with no seat of the pants loss in torque at all, possibly a gain. I am running mine on a carbed 88" TC with SE AC, and am very pleased. One note: while cruising, the bike is very easy on the ears, yet it has this kind of low droning sound, kind of like a turbine jet engine. I actually think its pretty cool.
And somebody in the past asked about yellowing. Nope not even a hint.
Easy process, let me know if you are interested in the procedure. Cheep and easy.
Pumba11,
Will your approach for "de-catting" work on the 07 CUSE mufflers?
TIA,
TC
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If this '07 is like the '06 where you an see the cat element when looking in the inlet. I don't think it would be a problem. But I have not done an '07 muffler myself.
Here is what I put in the previous post.
PIPE PUNCH METHOD
I was able to core out the cats on my '06 CVO mufflers like Dartman said above. However I did not use the core bit, but sharpened the end of a 18" long, 1.5" diameter metal pipe on the bench grinder, and pounded it through the cat with a small sledge hammer for a nice clean core (see picture above, just like that). If you make the pipe punch I would reccomend drilling two holes near the top of the pipe (across from each other) to insert a long bolt or ratchet extension to form a "T" handle to help twist and pull it out.
Core bit cost: about $45 with shipping on eBay
Homemade pipe punch cost: $0.00!!! (however my kids volleyball net post is about 18" shorter)
The cat material appears to be a type of aluminum so it was pretty soft.
8)
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Will your approach for "de-catting" work on the 07 CUSE mufflers?
06 and 07 are exactly the same, I have both
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I would make sure that you don't use a real thick or heavy walled pipe. The one I used was less than 1/8" thick.
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I sent my stock mufflers to Steve at Fullsac Performance. {www.fullsac.com}. I am very pleased with the workmanship and quality of his work. The price was $199.00 plus shipping, so it ran about $250.00 total. The mufflers sound great but not too loud. I really wanted to keep the look of the 4" pipes on the CUSE and these were the ticket for me. :P Now I have a slightly used set of 98B's for sale.
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If this '07 is like the '06 where you an see the cat element when looking in the inlet. I don't think it would be a problem. But I have not done an '07 muffler myself.
Here is what I put in the previous post.
PIPE PUNCH METHOD
I was able to core out the cats on my '06 CVO mufflers like Dartman said above. However I did not use the core bit, but sharpened the end of a 18" long, 1.5" diameter metal pipe on the bench grinder, and pounded it through the cat with a small sledge hammer for a nice clean core (see picture above, just like that). If you make the pipe punch I would reccomend drilling two holes near the top of the pipe (across from each other) to insert a long bolt or ratchet extension to form a "T" handle to help twist and pull it out.
Core bit cost: about $45 with shipping on eBay
Homemade pipe punch cost: $0.00!!! (however my kids volleyball net post is about 18" shorter)
The cat material appears to be a type of aluminum so it was pretty soft.
8)
Pumba11,
Thanks much for the reprint. May have to give this a try.
TCinVA