Slightly Unusual - Refitting Original Exhaust

So. My 2024 ST1200 RR has a Pro-Race pipe fitted. It looks the mutt's nuts and sounds good, it's super light... but it's too loud for trackdays, even with the optional db killer fitted.

That's a problem because I'm a trackday instructor...

So I need to refit the standard pipe. The previous owner was good enough to keep all the original parts boxed up and safe, which is great. But.

He's fitted a servo eliminator, obviously. And I can't find where it is. I have a package for a Healtech but the only thing I can find is a grey box about 5cm by 3 by 3 with a wire from the loom going onto it and looking like it's permanent. The box is screwed onto the bracket where the servo would normally be, which makes me think it's the ESE. If so then I'm stuffed unless I embark on some loom surgery, which I'd like to avoid. Or I lock the valve open and refit the original pipe without the servo, which seems a bit crap because I gain all the weight and don't get the bottom end boost. Though obviously I do gain a bike quiet enough to pass trackday noise tests.

Why am I posting?

Simple. First of all, where would you put the Healtech so I know where to look? Second, has anyone encountered that little grey box? And last, if I have to, how do I lock the valve open (if that's the right approach)?

Cheers

 

Yeah, that's what I thought and it's what I did... but it's not there, which is what led me to asking here.

 

Yep, under the seat, behind the rear brake... Not lifted the tank yet but I guess that's next.

 

Good point.

For context:

Bike is a '24 1200RR. I'm the second real owner (first was Fowlers as a demo) and the previous owner tried to get it to suit him before giving up and buying a BMW (result for me!)

He removed the exhaust from the bean-can cat backwards and fitted a Pro-Race pipe and servo eliminator. He kept all the original parts and supplied them with the bike, which is nice.

Trouble is, there's Healtech ESE packaging in with the original exhaust but no sign of the ESE on the bike. Obviously there is one somewhere as it's not throwing any errors, but I can't find it.

It is going in for a service in a week or so, and I may well ask the dealer if they can spot it while they're rummaging around. I'd just rather find it myself so I'm not paying someone else for it...

Cheers

 

That's handy! Looking at the original, the valve is about halfway open, but as the servo is currently attached to the exhaust it could be holding it in that position. I'll investigate further...

 

OK, I found the ESE - turns out that grey box actually slides open - it's beautifully made and the gap is hardly visible - and the Healtech is inside it.

I'm going to try swapping back to standard tomorrow and will update. Interesting thing though - had it serviced yesterday and the tech at Rosner's said it was the nicest 1200 he's ridden, and suggested i should leave it alone... Hoping that if the previous owner has had it mapped then it'll still work with the stock can... Otherwise it's back to the drawing board...

 

Standard pipe back on, servo refitted. Getting the servo back in is an utter pig of a job, It's easy enough apart from the screws which hold the cover to the subframe, which requires fingers like ET, ir better yet Magneto's powers of moving screws without actually being able to touch them at all...

Anyway.

It's on. And no Check Engine Light. Woohoo!

Got a 500 mile round trip on Friday night so I'll let you know if it's horrible after that.

 

Managed to get a hundred mile shakedown last night. It's... quiet. Quieter than I expected. But power delivery is unchanged and it does make a nice grown when pressing on. Purely in the name of science I did manage to, um, stretch its legs a bit on a piece of local derestricted autobahn near Sieben Eichen and can confirm that it still goes like stink.

The other bit of good news is that the stock pipe isn't too bulky and ugly, because the rest of the bike loos so great that would be a real shame.

Eventually I may throw a GR Moto pipe at it because that has a baffle and because they're stupidly cheap. But for now I'm happy.

Just need to decide whether to hang onto the beautiful Pro-Race pipe now or move it on.

 

It had crossed my mind, I must admit. And seeing how you've done it... yeah, I could look at that down the line.Thanks for the really useful picture.

Your mates' description reminds me of following a mate on an Aprilia MIlle with what appeared to be open pipes. It wasn't the fact that it was loud so much as the way you could feel the noise pulses moving your organs around...

 

Cheers, I'll do that.