Running an R1150 without a lamda sensor

[DrAlf]

I’ve been running my 1150 without a lamda sensor for the last 2000 miles. I haven’t noticed any difference to the performance of the bike at all. Can anyone please explain the implications of running a bike without the lamda sensor fitted? Will it do any harm?

Thanks

 

[cookie]

with the sensor disconnected, my 1150 ran horrendously rich.

 

[DrAlf]

Would a lack of lamda sensor account for exhaust end cans being blown apart?

http://www.ukgser.com/forums/showthread.php?t=263720

Have got through three exhaust end cans in less than 5000 miles – blew a hole in the first one, blew the end cap off the second and have just holed a third exhaust can. Very annoying

 

[alanbmwgs]

As stated i am a subscribed tosser, with very limited mechanical knowledge, but if, as the previous post suggest that it made the bike run very rich, then maybe it's unburnt fuel in the exhaust igniting, and causing the end can to explode ???

 

[cookie]

i think they are supposed to compensate, and run on a fixed map if the sensor is disconnected.

mine ran very rich, so rich you could smell the petrol in the exhaust. they may not all do that

 

[Twotter]

i think they are supposed to compensate, and run on a fixed map if the sensor is disconnected.

mine ran very rich, so rich you could smell the petrol in the exhaust. they may not all do that

I remember following you on the way to Garmisch in 2005. Just about got my hearing back now

 

[Sir James]

If thats the spark plug sized thing in or near the cat then mines been of for 52,129 miles and hasn't made a difference ....

 

[cookie]

I remember following you on the way to Garmisch in 2005. Just about got my hearing back now

lambda was probably connected by then, with a BB Power Chip fitted.

no extra power that i could find, just noise. lots


you'll be pleased to know, my 1200 exhaust is stock, very civilised, and quicker

 

[Schtum]

The lambda sensor only influences the fuelling while the system is running in closed-loop mode, ie at relatively low revs and small throttle openings.

So if you ride flat-out everywhere, the absence of one shouldn't make a difference....

However, without a lambda sensor, the cat' might not take too kindly to being subjected to loads of unburnt fuel if the engine is running too rich on the basemap when it would otherwise be in closed-loop.

 

[DrAlf]

Interesting – thanks for the heads up Bike rarely ran below 3000 rpm which is where I believe the ECU switches from open loop to closed loop fuelling (or vice versa - wtf that means). I’ve ordered a used replacement lamda from Motorworks today (lost the original – don’t ask!). I don’t think it can do any harm re-fitting it

I've also got a K1200RS fuel pressure regulator fitted which runs at 3.5 bar as opposed to the 3.0 bar standard fuel pressure regulator. I used to have a PCIII fitted which lasted all of 1000 miles before self destructing I suspect that the bike is indeed running rich as a result of the fuel pressure regulator and current lack of custom map. Which is resulting in the end cans destroying themselves on a regular basis

I should be picking up a Remus Y piece and Can on Saturday to replace the blown laser hot cam fully system. I think I’ll look into ECU re-mapping to hopefully stop this happening again. Total cost for running repairs to current system are in access of 1K

 

[Ash]

Interesting – thanks for the heads up Bike rarely ran below 3000 rpm which is where I believe the ECU switches from open loop to closed loop fuelling (or vice versa - wtf that means). I’ve ordered a used replacement lamda from Motorworks today (lost the original – don’t ask!). I don’t think it can do any harm re-fitting it

I've also got a K1200RS fuel pressure regulator fitted which runs at 3.5 bar as opposed to the 3.0 bar standard fuel pressure regulator. I used to have a PCIII fitted which lasted all of 1000 miles before self destructing I suspect that the bike is indeed running rich as a result of the fuel pressure regulator and current lack of custom map. Which is resulting in the end cans destroying themselves on a regular basis

I should be picking up a Remus Y piece and Can on Saturday to replace the blown laser hot cam fully system. I think I’ll look into ECU re-mapping to hopefully stop this happening again. Total cost for running repairs to current system are in access of 1K

£1000+ FECK!!

 

[Sir James]

Interesting – thanks for the heads up Bike rarely ran below 3000 rpm which is where I believe the ECU switches from open loop to closed loop fuelling (or vice versa - wtf that means). I’ve ordered a used replacement lamda from Motorworks today (lost the original – don’t ask!). I don’t think it can do any harm re-fitting it

I've also got a K1200RS fuel pressure regulator fitted which runs at 3.5 bar as opposed to the 3.0 bar standard fuel pressure regulator. I used to have a PCIII fitted which lasted all of 1000 miles before self destructing I suspect that the bike is indeed running rich as a result of the fuel pressure regulator and current lack of custom map. Which is resulting in the end cans destroying themselves on a regular basis

I should be picking up a Remus Y piece and Can on Saturday to replace the blown laser hot cam fully system. I think I’ll look into ECU re-mapping to hopefully stop this happening again. Total cost for running repairs to current system are in access of 1K

PS ........ Mine was a 1150 ADV ...

Remus and y-piece fitted from day one ..........

 

[gothbiker]

Did you have a lamba sensor with the power commander? Been looking at the power commander website and emailed a few dealers in america, some details say the power commander doesn't use a lamba, funny enough my quill t3 silencer has started leaking....

 

[DrAlf]

The PCIII does come with an aftermarket lamda. I removed my standard lamda sensor to fit the power commander module then when the PCIII failed I couldn’t find the original lamda – hence no lamda until today