component on back exhaust
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Road Warrior
Joined: Aug 2007
Posts: 1,392
Likes: 43
From: South Australia
component on back exhaust
I'm gonna be fitting some short shots to my 2008 bob soon, I know about the oxygen sensors but what is the component on the stock back pipe?
it looks like some kind of valve, and does it have to go back on the short shot pipe.
I can't see it mentioned in the instructions anywhwere.
thanks in advance..............
[IMG]local://upfiles/41024/77A51B96A7204E9BABA2BF29221EA28E.jpg[/IMG]
it looks like some kind of valve, and does it have to go back on the short shot pipe.
I can't see it mentioned in the instructions anywhwere.
thanks in advance..............
[IMG]local://upfiles/41024/77A51B96A7204E9BABA2BF29221EA28E.jpg[/IMG]
Outstanding HDF Member
Joined: Jan 2007
Posts: 3,438
Likes: 3
From: Chesterfield, VA
RE: component on back exhaust
That will be the first one with anything like that I've seen. I am wondering if it is something the Aussies requiredto get it across the waters from the US.
Cruiser
Joined: Aug 2006
Posts: 190
Likes: 1
From: Warwickshire
RE: component on back exhaust
That is the solenoid valve which diverts the exhaust gas flow during certain throttle/roadspeed combos to quieten it down for the Euro III fly-by noise test. It is fitted to HDI models for Europe and Australasia.
Search around on the internet and you will find a guy in Oz who sells plug-in gizmo's which allow you to disconnect/remove this valve (and the one in your air intake) so that you don't start throwing error codes everywhere when you disconnect.
All the best with your new scoot.
best regards
WW
Search around on the internet and you will find a guy in Oz who sells plug-in gizmo's which allow you to disconnect/remove this valve (and the one in your air intake) so that you don't start throwing error codes everywhere when you disconnect.
All the best with your new scoot.
best regards
WW
Intermediate
Joined: Apr 2007
Posts: 27
Likes: 0
From: Irish Republic
RE: component on back exhaust
Its a bypass valve fitted to export models. In order to pass EU exhaust laws, silencers are very quite, as you all know. The laws say at 3000 rpm it should be 93db, and testwith a drive by(could be a bit wrong here, check the sticker on the frame) so Harley fit this to open up the restriction once revs go above this. It is also connected to a sensor in the air filter. Rev your bike and watch it work.
Road Master
Joined: May 2007
Posts: 1,168
Likes: 1
From: Cornwall UK
RE: component on back exhaust
I recently fitted V&H Shortshot staggered , which does away with the active exhaust valve you mention. It,s an easy job, simply disconnectthe cable to the valve and remove with the exhaust system. You will however need (as walter says) to plug a gizmo into the electrical socket that feeds the valve,this tricks theelectrics so you don,t get a fault code on your instruments. There is a similar electrical gizmo that plugs into the back of the air cleaner which i assume you will upgrade to stage 1 to run with the pipes.The Vance & Hines Fuel Pak No.V61005A comes with these 2 electrical plugs / gizmos for the European market, you should check with the V&Hguys by e-mail if you are considering one.
Advanced
Joined: Nov 2007
Posts: 64
Likes: 0
From:
RE: component on back exhaust
thats what i have on my german model!!!
its the harlea-davidson sound management!!!
if you drive under 50km/h the valve is closed!!
if you drive over 50km/h and under 80km/h the valve is open!!
over 80km/h the valve is closed!!!
i demounted it and pluged a gizmo !!!
it works now but the problem is my bike is alittle bit illegal now here in germany, but who cares?
its the harlea-davidson sound management!!!
if you drive under 50km/h the valve is closed!!
if you drive over 50km/h and under 80km/h the valve is open!!
over 80km/h the valve is closed!!!
i demounted it and pluged a gizmo !!!
it works now but the problem is my bike is alittle bit illegal now here in germany, but who cares?
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