I literally spent 6 hrs doing this mod this past Saturday. It wasn't hard really, you're right, it is time consuming. The result was "ok". I really wish I had de-cat'd it now. If you have basic tools and a welder, it's worth doing, But I would recommend pulling the cat out too if you want that really aggressive sound. Also have someone with small hands help with the nuts on the exhaust studs on the head.

@knekt75

2 ай бұрын

Thanks for your input! I also think the result was ok, or maybe a bit more than ok. Soundwise, I was hoping for deeper rumble, but instead settled for the sporty sound. Regarding de-catting the system, I'm still thinking that _maybe_ I should have gone "all in" and just deleted that damn thing. But still, I'm happy with the current result... And those header nuts, they are a bitch for sure :)

@Noname-rb7qp

Ай бұрын

If you de-cat it you need a Race Mapping or you get some real Problems with the motor 😵‍💫😵‍💫

Genius no need of after market exhaust. We can tune stock exhaust the way we want ❤

@knekt75

5 ай бұрын

And it's relative simple and especially cheap modification. I paid about 100€ for the welding and that's it..

@jacquesartus9643

3 ай бұрын

idk how to say it proper but i am scared like u need to remap the aftermarket once maybe also here

That's sick! Definitely a bit more growl. Can you do an onboard sound demo and a flyby/street demo, please!

@knekt75

5 ай бұрын

Thanks! Yeah, a bit more growl for sure, but I wouldn't mind a more deeper growl. It's winter in Sweden, but I might post a flyby when the weather has improved.

@martinwhy5122

2 ай бұрын

👍🏻

@Noname-rb7qp

2 ай бұрын

Pls do it🙏🙏​@@knekt75

Hi, and thanks for posting this, it is very helpful. Do you happen to know if what type done is similar or the same as motoboxusa sport plus? I've done mine and was wondering if you've installed any tune and if so, how does it feel? Thanks, Jon( uk)

@knekt75

Ай бұрын

Hi.. Sorry, I have no idea how the Motobox configurations look internally, and I never installed a tune. My plan was to keep the modification modest so that I did'nt have to upgrade the ECU...

Do a fly by with it please let us here , ... also where abouts is the cat in the pipe ? That what annoys me about mine its like it is being choked at the top

@knekt75

20 күн бұрын

I'll try to record a fly by, stay tuned.... The catalytic converter is visible at 0:30, the tube to the left with a mesh inside.

Stockholm? Vem lämnade du isåfall in de till för svets?

@knekt75

4 ай бұрын

Svetsningen utfördes av en mekanisk firma i Stockholm. Firman gör flera jobb åt mig i tjänsten och gjorde svetsningen som en vänlig gest. Det var en engångsföreteelse och de utför egentligen inte sådana här jobb på daglig basis..

@knekt75

4 ай бұрын

@urboostd4865 www.hofmeijer.se/

Does the modification exceed the sound norms ? I believe that it is around 85db at 50% of the engine

@knekt75

2 ай бұрын

Sorry, I'm not aware of any sound norms. But in the current state it's over 100 db at 6000 rpm, which could be too much I guess. However, I had zero complaints and personally I don't think it's too loud. There are so many louder bikes out there...

@Wolfdgt

2 ай бұрын

@knekt75 that's true Then thank you for your presentation ! I'll try it on mine and if it's bad there some stock exhaust on Leboncoin and others

@knekt75

2 ай бұрын

@@Wolfdgt Yeah, there are plenty of exhausts on the used market. Go for it.. :)

@Wolfdgt

2 ай бұрын

​@knekt75 had you taken the radiator out to pull out the exhaust ?

@knekt75

2 ай бұрын

​@@WolfdgtNo, I only removed the 4 bolts and kept the radiator hanging in the coolant hoses. This will give enough clearance to remove the header nuts 👍

are you going to dyno this modification to see horse power increase?

@knekt75

5 ай бұрын

No, i'm not and no plans of updating the ecu. The purpose of this mod was only sound. If there are any gains in hp its just a bonus.

Is it necessary to remap?

@knekt75

2 ай бұрын

I don't think so. This modification is quite modest and the cat is still in there.

Hi. If the catalytic converter is still there, was those muffler that you removed? Btw, I'm the guy from Facebook that replied to your comment.

@knekt75

6 ай бұрын

Yes, the cat is still in there. The exhaust is basically made in three different chambers. When removing these pipes and blocking the holes, the exhaust only goes through one chamber (instead of three chambers).

@mahanghorbani523

6 ай бұрын

@knekt75 what those holes represent? I'm a bit confused. And by the way, how thick the metal blocker should be in order not to get melted completely when welding.

@knekt75

6 ай бұрын

@@mahanghorbani523 This video wasn't really meant to be a tutorial, but here's a better overview... kzread.info/dash/bejne/fn6dptCyZ9y-ZJc.html I think the metal blocks were only 1 mm in thickness. Any good welder can do this.

@mahanghorbani523

6 ай бұрын

​@knekt75 ah that answer why only 3 holes is blocked. But could you say what thsoe 2 pipe and that one hole represents? Thanks a lot in advance

@knekt75

6 ай бұрын

@@mahanghorbani523 they are only access for the exhaust gases between the three chambers in the muffler.

planning to remove the catalytic is it really loud with it ?

@knekt75

5 ай бұрын

No, in the current setup, it's not too loud.

@STRAZZ

5 ай бұрын

@@knekt75 will try to remove the catalytic then and lyk

@knekt75

5 ай бұрын

​@@STRAZZcool.. keep in mind that if you remove the cat you most likely need an ecu tune. Good luck 👍

@phylax8

4 ай бұрын

Hey. Im currently not in the same place where my bike is. (I have a 2023 tuono 660) I did the same as in the video and also drilled out the catalytic converter. (I kept the so called pipe that held all the metal so it doesn't go through any other chamber). In a week when i get back i could send you an audio if you'd like to compare them. I also have photos of the process if you need them.

@STRAZZ

4 ай бұрын

@@phylax8hi, yes absolutely do you have instagram ?

does this result in less back pressure since you are removing bends and restrictions?

@knekt75

4 ай бұрын

Maybe some loss of back pressure in the system, but there still is a cat and minor pipes in there so its not a totally free flowing system. I havent noticed any loss of power...