From my understanding, the flapper valve is basically put in merely for emissions purposes. When you change to a full aftermarket exhaust then there is no need for the emissions equipment.

So, if you are building your own custom y pipe don't worry about the servos on the pipe or the flapper valve that is in it. Furthermore, you can take the servo cables completely off the bike. Just be careful not to turn/spin the servo pulleys that are located under the seat. That is where the servo cables attach.

Search "Dan Moto cat delete" and it will give you some more information as well as some pics or vids.

Cause that is basically what you are doing with making your own y pipe.

Hope this helped.

 

So BIG O I found this great explanation from Akrapovic check it out so I can understand more which cables go out and which ones to hide.

http://shop.jamparts.com/pdf/nav_455y_bmw_s1000rr_rac_evo_10_t[1].pdf

 

Linkie no workie

 

On my 2010, I was able to remove everything cables and the servos themselves with no ill-effect. Just unplugged them from the harness and removed them from the bike. It caused no error codes on the dash.

 

Same on my 2011 except I went with the cat delete and not the full system.

Or do you mean you removed the servos from the area under the seat too with no issues?

I just disconnected the cables from the servos on the mid pipe and the ones under the seat.

 

http://shop.jamparts.com/pdf/nav_455y_bmw_s1000rr_rac_evo_10_t[1].pdf

 

Try this one

 

That looks to be a pretty good write up.

Although i took the cables of the mid pipe before I took them off from the servo motor under the seat.

It looks a little daunting at first but once you get in there and see things it's fairly easy.

So, do you have aftermarket headers that you are linking your custom y pipe to?

Or are you using the factory headers and just cutting off the catalytic converter?

 

Yea I actually have Akra headers and now am getting my custom mid pipe done to link with a Yosh slip-on.

I actually went to the dealership so i can get a better idea on how this stuff works so from I've been told is exactly what you said. I can take everything out but without touching the motor which is under the seat, even the cables so that's good. Hopefully i'll get it up running like a beast on Friday.

 

Good deal.

Here is my 2011 with the Dan Moto and Yosh slip on:

 

That's nice man! I just ran into a bummer that ruined my day! The Akra headers that I bought from a member on the forum didn't fit my bike which is like :S WTH like this guy should've told me that it won't fit 2013 but instead he was like it's 2012+ but whatever am just going to cut my OEM headers and still do the mid-pipe and run my thing.

Now am going to start looking for a decent headers so I can still get my performance right.

BTW my Yosh is not an R55 or R77 it's an R11 I don't think a lot of people know about it but it sounds so different than any other in my opinion.

 

Headers are the same from 2012-2014. Actually, I believe they are the same from 2010-2014.

 

Bummer!

Hate to hear of the header issue.

I believe the R 11 is the slip on that has the two pipes in the can?

Correct?

 

Yes sir that's right

 

But they didn't fit my bike which is such a bummer!

 

Then they were not mounted properly. If they were in fact headers for a S1000RR there is no reason they should not have fit.

 

i have to find the time to do my cat delete pipe and remove the servos myself

 

Some folks use 10-11 stock headers on 12-14 bike when installing the cat delete. The mounts are the same, pipe shape is different.

 

Well I'll try to fit them one more time just to make sure. I might be wrong.

 

We are talking Akrapovic headers here, no? I know the oem exhaust is slightly different between models.

 

We are. I was saying stock exhaust works across different model years. Akrapovic should be the same.

 

Ok guys so it has been tried one more time trying to fit it in. But again a failure!!! Flanges are off by like a quarter of an inch and header ports are smaller than oem.

 

That makes no sense to me...

I have a 2012 which I put 2010 Headers on for a while before eventually going full system, granted it was't Akra but still, AFAIK, they are all the same 10-14.

What do you mean by the flanges are off by a quarter inch? In which direction? Also, what do the parts measure that go into the head vs the OEM's?

 

Well you might be right since it said on every Akrapovic exhaust that it would fit from 2010-2014.
What I mean is as far as for the flanges is that whenever I try to screw them into the hole one screw can fit and the other doesn't go in.

 

Post up some pics if you can.

Maybe thatll give everybody a better ideas as to where the issue is.

 

Yea that's what doing just to show how everything is not coming together

 

This is the update of the pictures I couldn't get any better pictures as it's too tight to slide my phone there. So as seen there's no space for the screw to bolt in.

 

I have an 8 month old Akra ti system on my 2012 and the exhaust flanges are about 4mm thick, much thinner than what's shown in your picture. It could be just the picture that makes yours look thicker. Could you measure the thickness of your flanges?

 

If you pull out the header pipe does the flange even line up with the studs? Can you align any of the flanges to any set of studs?

 

No they actually don't. I tried in every way possible

 

Then they are not parts for an S1000RR. Don't try and sell them as such either.