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UK ER6n - US Yoshi pipe - where to add sensor bung

4K views 19 replies 4 participants last post by  GR rider 
#1 ·
Hi all,

Thanks for the amazing info already on US/EU pipes, O2 sensors and so on. I made the mistake BEFORE I read the posts, of importing a Yoshi TRC slip-on without the bit where the O2 sensor screws in.

But all is not lost - I've ordered the threaded bung and have found a welder nearby who does this kind of thing a lot. All I need to know now is WHERE the best place is on the slip-on to drill the hole and weld the bung, so that…

A) The O2 sensor reaches it
b) It doesn't get in the way of anything else, including the scoop.

Any help appreciated - I can kind of guess, based on where the threaded bung is on the stock exhaust, but just checking.

Many thanks in advance.

George.
 
#3 ·
What makes people think you can just remove the O2 sensor because you've fitted an aftermarket exhaust? Was it not doing anything before, simply there for show? The O2 sensor provides important information to the bikes ecu to ensure it runs effeciently/properly, why do you think it is there?

You should only use an O2 sensor eliminator if you've fitted a mapped Power Commander or had the ecu remapped, that is the only time the O2 sensor is no longer required.
 
#4 ·
Exactly, and my question was where to add the threaded bung, not whether I should use an O2 sensor or not. I'd prefer to know that the ECU is getting important info and using it to keep the mix correct. It's easier than fitting a mapped PC or an ecu re-configuration, keeps the bike fairly standard, and I don't really care about a weld on the slip-on. Eliminators are known more for the trouble they cause than the problems they solve.

I'll figure it out..!
 
#5 ·
This is the only picture I have so not sure it will help. It is also from a 2009 650R. This is looking from the left side of the bike. Header is on the left and the O2 is on the small link pipe. The exhaust is a Leo Vince underbody.


 
#6 ·
Thanks XPyrion,

The mechanic and the specialist welder are only about half a mile apart, so I'm going to take the bike and the new pipe to the mechanic who\ll fit it, and mark the best mount point according to how the pipe will eventually sit. Then I'll take the pipe up the hill and get the weld done, then take it back to the mechanic. Things we do for our bikes!

I couldn't see your pic, but thanks anyway.
 
#10 ·
"Hello again George, I am sorry that you couldn't relate in any way to the information I shared."

Come on now. I appreciate - and understand - the info you've shared. I had already chosen not to go down that route, for the reasons I explained. Do you understand and relate to them? I have found an expert welder who has done what I'm asking many times over.

Come here, give me a hug. It's all right...
 
#11 ·
Uhm, ok, I just wanted to clarify that I made a suggestion which is something quite common and welcome in discussion forums.


No intention to express any finer feelings with that post :)


It's your choice and I respect it.


After all, I 've already tried that method myself!
 
#18 ·
Okay, so anyway…

I lean to Harvey's way of thinking - and I've had the O2 sensor bung welded beautifully, the Yoshi fitted, and the bike is running great. Great noise, baffle or no baffle (enjoyed an hour or two sounding like a Chinook helicopter before putting the baffle in - neighbours' windows were rattling!). I like to know the O2 sensor and the ECU are making sure the injection mix is right, so I can focus on enjoying the ride.

Highly recommend the Yoshi TRC slip-on to anyone looking to upgrade from a stock. I was amazed how heavy that stock box was when it came off.

Probably easier to buy one with an O2 sensor mount already there, but adding one turned out to be quick and straightforward with a decent SS welder. About £350 all in for a cracking exhaust.
 
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