Question on Slip-On Pipes

JDBeretta · May 18, 2015

Hi guys, I'm not entirely sure if this would be better posted in the Mech/Tech section, but I'm sure it'll be moved if it should be (sorry Mods).

Okay. So quick and simple question is this: Does a slip on remove the flapper valve? My buddy asked me for a walk-around video of the bike and when I was holding my camera to show/hear the pipe, it caught footage of the flapper doing it's thing. I don't like it

My 1000rr had a flapper, and the slip on completely removed the flapper (and cat, and a ton of sh-t weight). I ended up going full system later on, but that's another story.

Thanks in advance for the advice.

Whoopazz · May 18, 2015

No, the up map disables it and it stays in the open position. At least that's what it did for my 1199S.

So I guess it kind of does get rid of it lol....

JDBeretta · May 18, 2015

Whoopazz said:
No, the up map disables it and it stays in the open position. At least that's what it did for my 1199S.

So I guess it kind of does get rid of it lol....

So the slip on attaches at the joint just in front of the valve? You can see it right at where the chain is there... Sorry for the .... pic. It's a screen shot of the video I took.

JDBeretta · May 18, 2015

After looking at what I posted, you can't see anything. Hahaha. Whatever.

BadBoyBeltran · May 18, 2015

The slip on Y pipe normally connects to the header part where the flapper valve is located, so the answer is no. The valve stays after you install the slipons. There's people who leave them in after installing slip-ons (the flapper stays open when disconnected or deactivated), and some actually take the time to Dremel the shaft to remove the valve altogether.

bp7178 · May 18, 2015

The flange that the slip-on connects to is to the rear of the flapper valve.

You can just unplug the flapper if you don't want it. On the 1199 and 899 doing so won't trigger a check engine light. The 1299 may be different, but I doubt it.

JHTmcrider · May 18, 2015

I ordered the Vizi-Tech today since I am working on installing the RB Module and Termi Front Exit Slip-ons.

Vizible Technologies | vizi-tec

Removing the entire cable assembly and servo. I am not using an up-map so I thought I should get this to prevent a warning light.

JDBeretta · May 18, 2015

JHTmcrider said:
I ordered the Vizi-Tech today since I am working on installing the RB Module and Termi Front Exit Slip-ons.

Vizible Technologies | vizi-tec

Removing the entire cable assembly and servo. I am not using an up-map so I thought I should get this to prevent a warning light.

That's what I'll be getting, if I go the slip-on (or full system) route. I'll see how the piggy-bank looks after the riding season.

bp7178 · May 18, 2015

Unplug the servo before buying an eliminator.

I made that mistake, and luckily was able to return the servo buddy.

JDBeretta · May 18, 2015

bp7178 said:
Unplug the servo before buying an eliminator.

I made that mistake, and luckily was able to return the servo buddy.

Is the servo in the tail section?

BadBoyBeltran · May 18, 2015

Servo is on the left side of the engine I believe.

showerfan · May 18, 2015

Doesn't the flapper valve only muffle sound when you're cruising along? It's open when you're accelerating, as far as I understand it, so the engine is loud and breathing freely when you're on the gas, and not loud and blowing your ear drums out if you're riding slab. Why would you want to disable or disconnect it?

Also, anyone who has the Termi front-exit slip on -- please report back? And take pics!!! Is it awesome? Does it sound better? Is it louder???

I want one.

bradp51 · May 19, 2015

That's not how it works

The valve closes around 3000 at about 60 kph in top gear. Sounds like you have dropped a cylinder. Its a noise reduction thing for drive by noise tests. Big topic here when the bikes first came out.

Disconnecting the cable does no harm.

bradp51 · May 19, 2015

BadBoyBeltran said:
Servo is on the left side of the engine I believe.

Its under the front cylinder behind he radiator area. If you put some full system on you can remove it all.

Marmoot · May 19, 2015

Termignoni slip ons come originally with a plug that substitute the servo. The installation instruction also covers removing the servo mechanism.
Only the butterfly valve itself is left (as it is in front of the Y pipe), but it is sprung to open position by default, so it no longer has any effect on noise/performance (well, it shouldnt affect performance anyway).

jyli19 · May 20, 2015

Marmoot said:
Termignoni slip ons come originally with a plug that substitute the servo. The installation instruction also covers removing the servo mechanism.
Only the butterfly valve itself is left (as it is in front of the Y pipe), but it is sprung to open position by default, so it no longer has any effect on noise/performance (well, it shouldnt affect performance anyway).

that's what I read on the install manual.

RD16RR · May 20, 2015

What happens with the slip-on Akra's for the 2015 Panigale-R - cats & flapper valve remain or are the cats in the stock cans ?

bradp51 · May 21, 2015

Marmoot said:
Termignoni slip ons come originally with a plug that substitute the servo. The installation instruction also covers removing the servo mechanism.
Only the butterfly valve itself is left (as it is in front of the Y pipe), but it is sprung to open position by default, so it no longer has any effect on noise/performance (well, it shouldnt affect performance anyway).

Glad there is no big lump of metal in the middle of my exhaust flow.

Marmoot · May 21, 2015

Cats are in the stock mufflers.
Flapper is before the Y pipe.

Question on Slip-On Pipes

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