Author Topic: Slip-on choices  (Read 6161 times)

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  • Offline vagosm   00

    • MTS 950 Member  ‐    29
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      #10

    Offline vagosm

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    Re: Slip-on choices
    Reply #10 on: December 08, 2020, 05:16:33 pm
    December 08, 2020, 05:16:33 pm
    best choice is the spark. the leovince has built in db killer and you will not have the chance to hear the true sound of the multi.




  • Offline Julsdiealot   gb

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      #11

    Offline Julsdiealot

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    Re: Slip-on choices
    Reply #11 on: December 08, 2020, 05:28:46 pm
    December 08, 2020, 05:28:46 pm
    Very nice 👍👍👍👌👌👌

  • Offline KillerRooster   au

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      #12

    Offline KillerRooster

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    Re: Slip-on choices
    Reply #12 on: January 03, 2021, 04:37:01 am
    January 03, 2021, 04:37:01 am

    Hi all, I am considering purchasing a MIVV Double Gun Slip-on for my 2020 950S. A couple of questions:
    1. Does anyone have first-hand experience of the sound from these pipes?
    2.  Is there any difference between the fitment on a 2020 model vs. 2019 model? (I don't believe there is, but the MIVV pipes I've looked at state model years 2017-2019)
    Thank you and Happy New Year.

  • Offline Kibo   it

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      #13

    Offline Kibo

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    Re: Slip-on choices
    Reply #13 on: January 20, 2021, 06:10:17 pm
    January 20, 2021, 06:10:17 pm
    You said you move a lot between Switzerland and Austria. Removing the cat pipe will make your bike illegal in those countries. They are very strict on these laws, I would be careful making this mod. 

  • Offline duccer   us

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      #14

    Offline duccer

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    Re: Slip-on choices
    Reply #14 on: March 27, 2021, 05:51:30 am
    March 27, 2021, 05:51:30 am
    Got the mivv double gun. Sounds great when you drill out baffles. Super light, super easy to install. Shield solution is effective but looks a bit rinky dink. Looks pretty silly but gets decent when you cut the back a bit open sideways ala mv. Dont take out the exhaust valve or you will lose mid and low end torque with no gain at the top. Valve opens at high revs and closes in certain low end acceleration situations. Contrary to popular believe it has nada to do with noise.

    I would strongly advise against removing the cat because all the mid  pipes also remove the valve . Also if you get stopped in switzerland without a cat (they smell you from miles away) you will have to tow the bike back home.  In addition the ms950 has a Bosch ecu which is nearly impossible to communicate with/ remap  with the standard tools (jpdiag...) . Rexxer claims they made it but i have doubts. I cant even talk to it at all after countless hours googling and hundreds of dollars in cables and driver updates. Also:  The New MS 939 engine does not have the original 821/848 MM overenrichment mapping in high revs (aka 6100 rpm wall) . So if you run a pipe with dramatically less back pressure and have not enriched the mix, your back cylinder outlet valve will be prone to burn out in longer high rev stints. The MS is just not a heavy modders choice.
    Last Edit: March 27, 2021, 06:12:30 am by duccer

  • Offline IakWhisky   scotland

      #15

    Offline IakWhisky

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    Re: Slip-on choices
    Reply #15 on: March 27, 2021, 07:16:48 pm
    March 27, 2021, 07:16:48 pm
    That's good to know. A couple of questions:

    drill out baffles

    How do you do that?

    when you cut the back a bit open sideways

    Can you elaborate on that as I don't understand?


  • Offline armageddon   pt

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      #16

    Offline armageddon

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    Re: Slip-on choices
    Reply #16 on: March 27, 2021, 07:25:22 pm
    March 27, 2021, 07:25:22 pm
    *Originally Posted by IakWhisky [+]
    That's good to know. A couple of questions:

    How do you do that?

    The baffles are bolted..

  • Offline motorman   us

      #17

    Offline motorman

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    Re: Slip-on choices
    Reply #17 on: March 28, 2021, 02:28:19 am
    March 28, 2021, 02:28:19 am
    Thanks for the info duccer!  I understand what you are saying, but LeoVince posted their dyno figures and the torque INCREASES in the 4000 range.  Do you know otherwise?

    This was the post from their website

    https://storage.gra.cloud.ovh.net/v1/AUTH_ac434bf2b1a448bc980f9f33012daf94/static/products/powerdiagrams/GP-80011.pdf

  • Offline Pedro S   au

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      #18

    Offline Pedro S

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    Re: Slip-on choices
    Reply #18 on: December 16, 2021, 07:18:09 pm
    December 16, 2021, 07:18:09 pm
    *Originally Posted by duccer [+]
    Got the mivv double gun. Sounds great when you drill out baffles. Super light, super easy to install. Shield solution is effective but looks a bit rinky dink. Looks pretty silly but gets decent when you cut the back a bit open sideways ala mv. Dont take out the exhaust valve or you will lose mid and low end torque with no gain at the top. Valve opens at high revs and closes in certain low end acceleration situations. Contrary to popular believe it has nada to do with noise.

    I would strongly advise against removing the cat because all the mid  pipes also remove the valve . Also if you get stopped in switzerland without a cat (they smell you from miles away) you will have to tow the bike back home.  In addition the ms950 has a Bosch ecu which is nearly impossible to communicate with/ remap  with the standard tools (jpdiag...) . Rexxer claims they made it but i have doubts. I cant even talk to it at all after countless hours googling and hundreds of dollars in cables and driver updates. Also:  The New MS 939 engine does not have the original 821/848 MM overenrichment mapping in high revs (aka 6100 rpm wall) . So if you run a pipe with dramatically less back pressure and have not enriched the mix, your back cylinder outlet valve will be prone to burn out in longer high rev stints. The MS is just not a heavy modders choice.

    1. The Leo Vince does increase torque without a reflash.
    1. Iíve replaced my mid pipe/ cat with the Leo Vince mid pipe and itís great, highly recommended. Increases torque and runs a lot cooler.
    3. I had the valve removed at the time of install, and with the parts supplied by Leo Vince and the bike doesnít have the fault light on the dash on.
    The bikes running great.
    4. Itís the bottom 40% of throttle thatís locked on the ECU, thus not allowing the full 100% of the throttle opening to be retuned. I got this info from a rexxer agent yesterday. Now awaiting more info Ö..
    Iím getting an answer back from Rexxer, if, with my mods they can tune the ECU to the full 100% to make it worthwhile.


  • Offline Lampecap   nl

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      #19

    Offline Lampecap

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    Re: Slip-on choices
    Reply #19 on: December 17, 2021, 02:45:30 pm
    December 17, 2021, 02:45:30 pm
    *Originally Posted by Pedro S [+]
    4. Itís the bottom 40% of throttle thatís locked on the ECU, thus not allowing the full 100% of the throttle opening to be retuned. I got this info from a rexxer agent yesterday. Now awaiting more info Ö..
    Iím getting an answer back from Rexxer, if, with my mods they can tune the ECU to the full 100% to make it worthwhile.

    What do you mean exactly. You cant adjust the bottom 40% and the top 60% is fine as is?