How to remove the catalyst - KTM 1090 Adventure Forum
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post #1 of 3 (permalink) Old 11-25-2019, 09:24 AM Thread Starter
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How to remove the catalyst

I'm seriously thinking about to remove the catalyst from my 1090 adv..... But I really need some help.
Has anyone done this yet? How I have to preceed?

I know I have to buy the Arrow exhaust pipe or something but I know too I have to solve more problems (electronic central unit settings or something like that...)

Thanks for you help!
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post #2 of 3 (permalink) Old 11-26-2019, 07:50 PM
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The correct way would be (In my opinion) to put on a catless header like the Arrow and a slip on exhaust.
Then get a new air filter and get rid of the stock airbox.
For ECU: the less expensive route is to use fueling dongles to override the O2 sensor signals or go the full route and get a Powercommander unit to fully tune the ECU. $$$$
If you're doing all of this I recommend deleting the evap container (under the seat) and remainder of that system.
All of this stuff can be purchased through one company. around $2,500 USD??

1090R - Wingsexhuast/BDCW.skid/MotoMosko.panniers/JesseLuggage.topbox
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post #3 of 3 (permalink) Old 02-18-2020, 02:47 PM
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I made a rectangular cutout on the underside of the Cat using a small diameter abrasive wheel. Remove the cat material, this took some effort but it all will come out. Welded up with a Mig. Nothing is visible after installation. I can tell a noticeable decrease in temperature on my boot. Tried to send a pic but didn't attach....
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