Fitting an Exhaust servo eliminator

[Wildchild]

Apologies if this has been asked before, but Can someone clear up the need for an ESE.  I've just fitted a cobra slip on to my 2019 Gen 1 and theres been a lot of comments on this subject.  Can anyone give me a definite answer for or against fitting an ESE and what it will actually give me if I do. Thanks

[Antares]

Originally Posted by Wildchild

Apologies if this has been asked before, but Can someone clear up the need for an ESE.  I've just fitted a cobra slip on to my 2019 Gen 1 and theres been a lot of comments on this subject.  Can anyone give me a definite answer for or against fitting an ESE and what it will actually give me if I do. Thanks

For slip ons, no you don't need an ESE as the flap is in the midpipe just after the cats and big muffler section, and even if it is removed,  there is no error codes if you just disconnect the cables.

[Wildchild]

Thanks Antares, in your opinion what is the best way to deal with the flap to make the most of my bike, just undo the cables or more if i can.  Can I ask what is the purpose of the flap and what benefit do I get from disabling it.

[Antares]

Originally Posted by Wildchild

Thanks Antares, in your opinion what is the best way to deal with the flap to make the most of my bike, just undo the cables or more if i can.  Can I ask what is the purpose of the flap and what benefit do I get from disabling it.

Flap is mainly there for noise purposes, it's fully open above 6k rpm and wont make a difference above that, below that keeps the bike quieter, to "disable" it, simply remove the cables from the motor to the valve, spring tension will keep it open though there have been cases where it slams closed due to pressure at high RPMs but mostly on gen 2s from what i heard. You can just hook it open though with a piece of wire.

[Wildchild]

Thanks Antares, really appreciate your knowledgable comments.

[esso_sa]

Originally Posted by Antares

Flap is mainly there for noise purposes, it's fully open above 6k rpm and wont make a difference above that, below that keeps the bike quieter, to "disable" it, simply remove the cables from the motor to the valve, spring tension will keep it open though there have been cases where it slams closed due to pressure at high RPMs but mostly on gen 2s from what i heard. You can just hook it open though with a piece of wire.

I believe on Gen 1 the flap opens as soon as you crack the throttle open and get moving. It’s closed only while idling.
On Gen 2 I can confirm from perosnal experience that it’s fully closed below 6k rpm.

[Antares]

Originally Posted by esso_sa

I believe on Gen 1 the flap opens as soon as you crack the throttle open and get moving. It’s closed only while idling.
On Gen 2 I can confirm from perosnal experience that it’s fully closed below 6k rpm.

Depends on throttle position below 6k, above that it's just open.

[Rotaxracer]

Originally Posted by Antares

Flap is mainly there for noise purposes, it's fully open above 6k rpm and wont make a difference above that, below that keeps the bike quieter, to "disable" it, simply remove the cables from the motor to the valve, spring tension will keep it open though there have been cases where it slams closed due to pressure at high RPMs but mostly on gen 2s from what i heard. You can just hook it open though with a piece of wire.

The only thing i would say about this is I have an ESE on my Gen 2 and I now get pops and bangs like I used to on my Gen 1 but not quite as loud. I have a stock bike apart from the Titanium factory Akra end can. Start up can be a bit fruity as the high RPM but quietens down nicely after that and is in no way too noisy for me.

Its about right unlike a full de-cat or the stubby pipes which for my ears are too loud.

[Salem]

Originally Posted by Rotaxracer

Start up can be a bit fruity as the high RPM but quietens down nicely after that and is in no way too noisy for me.

funny, i've jus been on a holiday with my stock Gen2 with multiple brand bikes and the fist thing they ask is why i put an aftermarket can on it. I just say no it's standard, wait a minute. Bloody annoying this raised idle, have to start in first gear to avoid potential gearbox clunck damage. They should stop serving beer at BMW HQ.

[smithy]

Originally Posted by Wildchild

Thanks Antares, in your opinion what is the best way to deal with the flap to make the most of my bike, just undo the cables or more if i can.  Can I ask what is the purpose of the flap and what benefit do I get from disabling it.

Gen-1 or Gen-2..?? You don't say which you have..?? If Gen-1... you can indeed remove the cables from the valve, it defaults to open... and is spring loaded "open". It will throw a fault code but not a fault light.

Benefits..?? None really except a deeper tone at all rpms instead of above ~6k. As Antares said, it's a noise/emissions thing. If you want proper benefits, fit a decent set of headers and get a decent tune....it will transform the bike into what it should be instead of the neutered athsmatic thing it is when stock.

I fitted a servo eliminator on mine when I removed the complete servo/cables assembly and fitted Arrow headers...no issues since and it doesn't throw a fault code.

Smithy.