Thanks for this. Just finished up a 23' 890 Adventure. A few notes which may be 23' specific. If you are re-using the original bolt that held the cat on to secure the mid pipe it's 15 Nm. The shift rod bolt is 10 Nm. The 3 T-45 for the footrest bracket side stand all need loctite. I wasn't able to get to the right side cat bolt behind the brake lever with a ratchet and socket and had to use a 10mm open end ratchet.

Just did 500 miles with my arrow and put my akro baffle back in. Instantly relieved my ears. Sounds dope with a straight system, but when you have a long trip or several days ahead, it still sounds good and keep the twin drone a bit. Stock muffler probably is great on the ears and still sounds cool. I agree, heat is way down. Keeps excess heat off the rear shock too, which has been known to fail early from CAT heat.

Thanks for the detailed video and the torque specs!

Excellent job old chap! Very thorough. Glad you gave us the weight saving - it's one of the two most important things 👍🏼😀

Do you have to remap or tune the bike after installing the cat delete?

Thanks Mario I appreciate it. Installed mine last night in less than an hour thanks to you! Happy riding my friend

Great video series on790/890 upgrades; super appreciate all you do. 🏁🤙

Lots to do for such a simple swap over. But you’ve covered it extremely well. Excellent

One thing to remember is that a change of 3dB either doubles or halves the sound pressure depending if it's going up or down. Anthony

Nice. Doing the same install this weekend. Yours sounds way better without the cat and has me really looking forward to mine with the Akrapovic.

Fantastic work. Thanks for sharing all the details. We all make mistakes so I appreciate you showing us the gasket miss.

I am looking at doing this on mine, is there any issues caused by decat? Do we need to have it mapped etc? Mine is running the Remus end can and sounds great already.

Thanks for the video. 👍installed the decat and intake. Huge improvement!

Second time through the video, sealed the deal for me. Thanks!

Great informative post! Good technique, great technician!👏🏻👏🏻👏🏻

Was there any tuning needed afterwards? If not, please explain so that I would understand 😢.

Off-road or on the road air is everywhere so why is it such a violation to run the new mod anywhere for that matter and I think it’s more of a safety hazard with that stupid hot cat can under your seat and ready to melt out the seals in the shock to blow out the shock and cause ride ability issues! I’m all in for this cat delete mod and great video!!!

Thanks Mario, great video as all the Back in the Garage series are.

Again another reason why I subscribed to your channel.

Informative and easy to follow instructions. Love thre grunt without the cat and will look into removing mine when my bike comes next week :) Thank you!

Nice job as always 👍🏽

Why I'm a fan of the Sharon exhaust from Rade Garage, keeps the heat out of there away from the shock...shocks do not like heat, especially the 390 ADV

You do a great job with your tutorials.......

Another good reason to re-use the torx bolt is that the allen bolthead is too big and youy cant get the footpeg bracket back on....ask me how I know!!!

Hey Mario, how did you find the heat issue, any significant improvement? How about performance, any issues with popping or backfire on the overrun? Lastly, any issues at low throttle or low revs? Thanks.

Great video Sounds way better without the cat

Hi Mario, I wanted to ask you, if the de-cat you have mounted, what does it have inside the largest duameter section? Thanks so much and forgive my english, i used the translator. Danilo

Good job Mario, pretty big job .

Your shop videos are helpful and impressive… sometimes I just watch them for the education factor. I traded my 1290 for a Standard 890 Adventure the other day. Don’t know if I’ll replace the cat, maybe… Thanks again for great videos.

Do I need to reprogram anything after changing the exhaust or exhaust with decat??

Just put the Leo Vince version of this pipe on. My bike sounds much better at idle and under throttle, and not to mention a lot more room around the new pipe for cleaning.

I have owned other bikes with a cat in the pipe and simply drilled the cat out using spade bits. On another bike I simply cut open a window on the side of the pipe and removed the cat. Then rewelded the piece back. Any reason no one does this with these bikes? If the pipes are stainless than I understand that takes a different welder.

Great video! One question: do you need to remap the engine software after deleting cat?

Very clear instructions. You’re videos are my go to for maintenance on my 790. Thanks mate. I appreciate the work you put into this.

Thank you for the video I haven't read all the replies but I was curious if you have to do anything to turn off an engine light or remap it in any way because now you're bypassing the O2 sensor by the way I see it thank you

I just went out and looked at my Cat sitting on the shelf! Still had the gasket on it lol! only 9k miles later...

Great DIY post! Any reason to not use a thread locker on the bolts? Thanks!

Excellent video. Thank you for filming and posting. You still happy with the CAT delete? Any issues? Looking to do the same for my 890R over winter.

I'd do it just for the sound and heat. With a 1290 it already has more power than I'll ever need and if I was concerned about weight on the bike I'd eat less. Thanks.

THANK YOU FOR ALL THE INFO, VERY HELPFUL. I M ON THE MARKET FOR 2023, BUY THE KTM 890 ADVENTURE 2023. ABOUT THE SWINGARM SCREW AT 100NM DO YOU PUT BLUE LOCKTITE....

Well done!

Thanks!! You have saved me hours (maybe days)

Great video, did you remap the ECU. It it something that needs to be done?

oh that sound is sweeeet!!!

Great video sir........Just one question. There is no special tuning needed when deleting?

Thanks, I appreciate your videos. Once I do this will the factory mapping still work fine or do I need to add a power commander and a tune?

Did you need remap , sport air filtre and ecu flash ???

did you happen to think to heat wrap that midpipe? I am putting on a similar midpipe swap and am thinking of wrapping mine...also installing the plate between that hot area and the rear shock. Thoughts????

Hi from Greece! Did you notice any change in fuel consumption after cat delete? Are you going to change the air filter too? Thanks and keep doing so cool videos for us!

Will the mid pipe void the factory warranty? Wonderful garage video as always. Bike definitely sounds better now.

Great Video. Where do you get torque specs and other various mechanical information on this kind of bike? User manuals seem to be lacking a lot of technical detail. Is there a way to get shop books/ information or something for more technical, say wiring diagrams or other various details?

Love that rasp! Did the prices go up dramatically on this piece. You said $240 in your video and I just paid $340...

Hello, excellent video, I have a problem I am trying to do it to my 2024 Husqvarna expedition and suddenly appear a O2 sensor in the catalytic, so I need your help do you know the model for the bypass to eliminate this O2 sensor, thank you

Great video

I have a 2019 790 & will be doing this same mod, is there any software u nesd to change or remap after this?

Hey Mario, I really enjoy all your videos. Question removing the Cat, Is there any "Check Engine lite thrown? Did you first need a Tuner?

So what is the point besides the weigh. Is there any other benefit ?

Quick question,,, I removed my catalytic converter and did the same as you,, left the gasket on the cat. I couldn’t understand what I’d done wrong, found your video,, and thanks. But my question,,, how did you get the gasket off the cat??

Sounded much better with the delete

Mario I followed your vid and installed my Arrow Mid-pipe today. All is good, no leaks at all… But one thing I wasn’t clear on is the tab on the mid pipe and how it attaches to the small frame tab that comes down. I just had issues trying to figure out how to make that solid so I can torque it to the 25 Newton meters. Ultimately I used one of those black spacers put that on the outside. I’m not 100% happy with that connection. I mean it is solid and I’m sure it’s fine but it just wasn’t as neat and clean as I would’ve liked it to be. Any suggestions on that? Thank you.

Are you planning to change the exhaust can with a slip on? Would seem to add more to sound, and possibly save some more weight.

Mario, I have 2023 890 Adventure R. I've been seeing a lot engine failures related to cams. Did the removal of the cat help with cooling?

Great video, I love my 890, however this heat that radiates out is unbearable especially in Las Vegas. So all I need is that arrow midpipe? And you truly noticed a heat difference? Because I’m thinking about getting a new bike due to this heat. Thx

Think im going to go for the sc project and get rid of the cat 🐈

Good job, I wonder if it does need retune the ECU ?

Hi since you've had it on there awhile, have you ended up with any exhaust leaks? Great how to video

You have to remap it?

Great video! I did the same installation to my bike but I have a problem. After 5 kilometers test run my engine was stalled and it won’t start again. I have to pushed my bike home and replace the decat mid pipe to the stock catalyzer pipe. And when I start the bike it only runs for 130 seconds and stopped. I don’t understand which step I did wrong…Do you have any idea?

thx for the video. did you notice any less heat after the cat delete? any other improvements or cons? thx

How does the cat delete affect the power below 3000 rpm?

So, by changing the mid pipe wont that require a new jet tuner?

The clamp that goes on the midpipe and the engine pipe just will not line up, the engine block itself is not giving the clamp enough clearance. Did you have any issues with this? Spent the last 4 hours trying to get this clamp on and it will not fit.

Ciao, sto vedendo anch’io se mettere il decat arrow. Domandina: perché ha quella formo di “bambolotto”, c’è della lana di vetro all interno o è libero? Perché ha questa forma e non quella a “S”? Grazie in anticipo

Hi I am getting my new 890 duke r on Saturday and want to put a decat pipe on. Does this need mapped after install? Or runs fine just with decat fitted??

Mario, quick question please...thoughts on KTM engines are already tuned high for performance...my concern is that a d cat will further tune the engine to the side which may put additional stress on the engine longer term? In your opinion is that fair, or would you disagree? thanx appreciate the comments!

Re-flash needed ??

Did you have to do anything to the electricals so there wasn't a warning light?

Can anyone comment about removing the cat leading to being too lean and a service light that knocks out cruise control?

Was there and performance gains? Easier revving motor?

how do you remove gasket flange from stock catalitic converter

No need to remap when removing a cat?

Any concerns about running to lean? Thanks

Too bad you didnt take any temperature measurements before and after.

Any warning lights triggered, by the delete?

Mapping??

Where is sound test bro ? 😃🔊🎶🏍💨

Do you huave a video with the arrow sleep on….?

Hi What bike stand are you using?

Do we loose fuel mileage??

What about factory warranty ?

At 16:08 the torque setting for the silencer is 25nm not 15nm, as per repair manual🤷‍♂️

I have a 890 R 2022 , I do have the Rottweiler intake . If i do this will it require a tune?

Why delete the cat for a mere weight savings of 4 lbs.? Just delete the sub and soda you have in your tailbag and take a crap before you go riding. The euro 5 emissions software on the 2021+ is inclusive of the cat in place and incorporated into the ECU. The lack of a cat will make the bike stumble at high revs. I was told by a pipe manufacturer after multiple runs on the Dyno that a cat delete actually hinders the performance and certainly kills the warranty. Personally, I would not alter the performance of my bike over 4 lb and a little extra heat that I've never felt on my 890 ADV anyway. Just IMHO! However, congrats on your very informative how-to video for those that dont care about performence and value loud pipes.

I've "deleted" a few cats as well with my cat trap. Oh not that sort of cat. I will see myself out.

You can not measure DB in a garage … and not with you phone.

What was your day job before being a KZfaqr?