Removed Cats from factory exhaust - Ducati Monster Forums: Ducati Monster Motorcycle Forum
 
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post #1 of 10 (permalink) Old 01-15-2013, 06:51 PM Thread Starter
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Removed Cats from factory exhaust

I wanted a set of pipes for off road or race days and was told the factory pipes get red hot because of the cat.

I didn't have a extra $1200 around for aftermarket ones.
Found a set on ebay $41 and cut them up.

so here are the pics.

I must say thanks to Ryanracer if I didn't know what was in the factory exhaust I wouldn't of cut in.

if anyone wants sound clips let me know I will post up before and after when I install these to test them out. I don't expect it to be a big difference the stock baffle is still in place.

Heat the outter sheild up and it falls off no need to beat with a mallet.


Two pcs as you can see


Cut open


Close up of cat


Ready to weld


Welded up


Painted with high temp BBQ paint for some rust protection.


Heat the shell back up and drop on make sure the bolt holes line up and let cool.
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post #2 of 10 (permalink) Old 01-15-2013, 06:52 PM Thread Starter
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Done
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post #3 of 10 (permalink) Old 01-16-2013, 04:19 AM
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Great write up, thanks, and yeah sound clips would be great. Are you planning on leaving the baffles in place, or are you going to remove them as well?

Bikes: Monster 696 | GSX-R600 | Ninja 250
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post #4 of 10 (permalink) Old 01-17-2013, 07:14 PM Thread Starter
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The few clips on youtube I've heard with cored pipes sounded to loud.
I didn't change the stock baffle but if i'm not happy with the sound.
I just may make a change to the shape of the baffle.
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post #5 of 10 (permalink) Old 01-21-2013, 08:56 AM Thread Starter
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OK so I put about 50 miles on the cat less pipes yesterday. one big difference is the heat almost 100 degs lower then the pipes with cats using my temp gun. and that is in 46f weather.

The exhaust tone is different also, deeper would be the correct term not so much louder but I have two vids I will post up shortlly so you tell me.

Bike seems less choppy down low too, don't know how. Could be I'm just getting use to it.
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post #6 of 10 (permalink) Old 01-21-2013, 10:14 AM Thread Starter
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post #7 of 10 (permalink) Old 01-22-2013, 08:56 PM
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To my ears, with the cats in, the exhausts sound as if there is a heavy blanket over them, and in the seconds video, as if you took the blanket off. Sounds good.

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post #8 of 10 (permalink) Old 01-23-2013, 09:24 AM Thread Starter
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You can really hear the difference on the road. it is much better.
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post #9 of 10 (permalink) Old 01-26-2013, 05:55 PM Thread Starter
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I have a extra set of 696 pipes I removed the cats on, before I knew that the 796 pipes were different.
Anyway I'm planning on putting them on e-bay but thought I would ask here if anyone wants them?
they cost me about $125 to buy and I have a few hours in taking the cats out. So how about $200
PM me if interested.
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post #10 of 10 (permalink) Old 01-26-2013, 06:59 PM
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Removed Cats from factory exhaust

Good job on the pipes! Real clean.

'08 S4RS Tricolore #109/ keeping forever
'06 Victory Kingpin
'05 999 Biposta/ sold
'02 Foggy #90/ sold
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