Header choice and AIS blocking

[z900man]

Hi guys,

I've been wanting to buy a Leovince LV10 slip-on, but unfortunately the delivery date keeps getting further away.. even months now.
Leovince won't reply to my e-mails about the stock either.
As I already have a Akrapovic Slip-On (the large one from the performance package) I'm looking for headers.

I'm looking for headers that I can use without getting a tune.
I can replace the air filter and block the AIS (to stop the popping I think?), but tuning is something that I would not like to do right away..
Currently I do not have enough money to buy everything at once.

Am I correct that something like this won't need a tune:
- K&N Air filter (https://www.uitlaatstore.nl/kn-ka-9017)
- MIVV/Arrow headers (I can get Akra, but I think I read somewhere that the pipes might be bigger and thus needing tune?)
- AIS blocking with rubber stoppers

Is the Air filter also necessary for it to perform without tune?

[Cazzy_R]

The 2017-19 bikes run fine with a full system and no tune. I see from your profile you own a 2022 so that's probably not much help.
The filter is irrelevant to how it will run without a tune. If you are short of cash stick with OE, or even if you are not. Put the money towards a tune.
 Ensure you buy a header for 2020 onwards. The muffler connection was changed that year on Euro 5 spec bikes.
 Yes block off the AIS if you don't want pops and bangs. I tried the rubber caps to blank off the AIS. Something more solid such as a piece of steel rod, ball bearing or even a wooden dowel is better.
Also make sure you blank off the correct hose. NOT the crankcase breather hose!

Good luck.

[3alfa3]

Originally Posted by z900man

Hi guys,

I've been wanting to buy a Leovince LV10 slip-on, but unfortunately the delivery date keeps getting further away.. even months now.
Leovince won't reply to my e-mails about the stock either.
As I already have a Akrapovic Slip-On (the large one from the performance package) I'm looking for headers.

I'm looking for headers that I can use without getting a tune.
I can replace the air filter and block the AIS (to stop the popping I think?), but tuning is something that I would not like to do right away..
Currently I do not have enough money to buy everything at once.

Am I correct that something like this won't need a tune:
- K&N Air filter (https://www.uitlaatstore.nl/kn-ka-9017)
- MIVV/Arrow headers (I can get Akra, but I think I read somewhere that the pipes might be bigger and thus needing tune?)
- AIS blocking with rubber stoppers

Is the Air filter also necessary for it to perform without tune?

I bought LV-10 Black Edition from Spain for my 2020 Z900 this February (from Motocard). It was cheapest i could find (219€ shipped to Croatia). For Euro 5 model (my Z900 is 2020 EU model), it is loud even with breadbox (without Breadbox it would be intolerable). I removed mesh from it and it became even louder and much deeper sounding (same as Full Black and Titanium LV10 Models which don't have mesh at the end and sounds completley different).


Can't believe that LV10 is not to be found immediately in EU for your bike.

[z900man]

Originally Posted by Cazzy_R

The 2017-19 bikes run fine with a full system and no tune. I see from your profile you own a 2022 so that's probably not much help.
The filter is irrelevant to how it will run without a tune. If you are short of cash stick with OE, or even if you are not. Put the money towards a tune.
 Ensure you buy a header for 2020 onwards. The muffler connection was changed that year on Euro 5 spec bikes.
 Yes block off the AIS if you don't want pops and bangs. I tried the rubber caps to blank off the AIS. Something more solid such as a piece of steel rod, ball bearing or even a wooden dowel is better.
Also make sure you blank off the correct hose. NOT the crankcase breather hose!

Good luck.

Thanks for the tips!
I've been looking up some videos on it, seems easy enough to do :)
Can imagine that the pops and bangs will be very loud with an open pipe, even with the akra. Don't want to bother the neighbors.

[z900man]

Originally Posted by 3alfa3

I bought LV-10 Black Edition from Spain for my 2020 Z900 this February (from Motocard). It was cheapest i could find (219€ shipped to Croatia). For Euro 5 model (my Z900 is 2020 EU model), it is loud even with breadbox (without Breadbox it would be intolerable). I removed mesh from it and it became even louder and much deeper sounding (same as Full Black and Titanium LV10 Models which don't have mesh at the end and sounds completley different).


Can't believe that LV10 is not to be found immediately in EU for your bike.

I've really been wanting to buy the LV10.. but the thing is that I ride pretty much always in Germany as I live next to the border.
If I remove the mesh it's illegal immediately. I know they check for legality on the parts there. Heard lots of stories from some motorcycle riding friends too. Especially with a dutch license plate.
The Full Black and Titanium are not in stock anywhere, the delivery date keeps getting extended and a few shops that I called told me it will take weeks or months to get in stock again.
Leovince doesn't even reply back for some reason.

If I get new headers I can continue using my Akra slip-on and still have a good sound, but the akra is still legal and relatively tame compared to other silencers.

[3alfa3]

Originally Posted by z900man

I've really been wanting to buy the LV10.. but the thing is that I ride pretty much always in Germany as I live next to the border.
If I remove the mesh it's illegal immediately.

Then, find stainless steel or black edition, they also sounds great and much louder and deeper than stock on Euro 5.

Originally Posted by z900man

If I get new headers I can continue using my Akra slip-on and still have a good sound, but the akra is still legal and relatively tame compared to other silencers.

Yes, good sound, but also ilegal.


Here in Croatia, it is also very strict: we must homologate (already homologated  ) slipon (35 Euros), which includes visual and loudness check (max 97db+5db for 2020 Z900). Then this "homologation" is written in bike permit. Lv10 is most popular choice for Z900 because it does not have db killer (ilegal to ride without one if homologation is with db killer). Mesh is not important here: as long 97+5db is meassured at police check and exhaust is labeled in permit: all good.


Btw, all LV10 slipons (Stainless Steel, Black Edition (both with mesh), Full Black and Titanuim (both without mesh) are homologated for Z900 in EU. That fact should be enough for 99,99% cops. Don't expect for cop to notice a difference if mesh is removed, especially when noise level is under the limit it they ckeck.

[motomat]

i did a full LV header/exhaust on my '22 without a tune, runs fine checked the spark plugs for confirmation.   

If you do get the LV10 slip on (i have one as well)  there is a factory DB killer you can buy separately.  It lowers sound about 5-8db. 

[3alfa3]

Originally Posted by motomat

i did a full LV header/exhaust on my '22 without a tune, runs fine checked the spark plugs for confirmation.   

If you do get the LV10 slip on (i have one as well)  there is a factory DB killer you can buy separately.  It lowers sound about 5-8db.

... and takes 5-6-7HP away

[Cazzy_R]

Originally Posted by 3alfa3

... and takes 5-6-7HP away

 

[CRAKALAKIN213]

I have a 2020 and have done this all. Our year needs a tune for any removal of cat/addition of headers as the bike will run too lean and hot.
As for options I went with a BlackWidow header as it’s a larger inner diameter than stock and actually has performance benefits unlike other systems. It’s paired with an SC Project slip on designed to go on stock pipes so I know the BWs will work with slip ons