can't you just fix the flap in the open position? I thought it was only there for noise regs but I may be talking complete bollocks.
can't you just fix the flap in the open position? I thought it was only there for noise regs but I may be talking complete bollocks.
Not an engineer but it does have other uses, such as torque and grunt etc.
Not according to the BMW techs I spoke to, it is only there for emissions and noise and if open doesn't impact the working of the bike at all. They normally fail in the open resting position. So if its stuck you can just leave it, but when you switch the ignition on, the flap goes through a test, so if its stuck it throws an error code, so if you take your bike to the dealer and they plug it in, they will know the flap is stuck. You can also just take the cables off, so the actuator moves, but it can spin too far as there is no resistance, so again error. I did see a company in the States makes a module you can plug in to fool the ECU. In a nut shell, if I couldn't get free replacement, I would have just boshed it out, but if you sell to a dealer, they are looking at £1300 to fix, so if buying used, make sure the flap works
Not according to the BMW techs I spoke to, it is only there for emissions and noise and if open doesn't impact the working of the bike at all. They normally fail in the open resting position. So if its stuck you can just leave it, but when you switch the ignition on, the flap goes through a test, so if its stuck it throws an error code, so if you take your bike to the dealer and they plug it in, they will know the flap is stuck. You can also just take the cables off, so the actuator moves, but it can spin too far as there is no resistance, so again error. I did see a company in the States makes a module you can plug in to fool the ECU. In a nut shell, if I couldn't get free replacement, I would have just boshed it out, but if you sell to a dealer, they are looking at £1300 to fix, so if buying used, make sure the flap works
Yep, the reason being that back pressure is largely governed by the header pipes and CAT, not the flap. Setting it permanently in the fully open position might make a small change in low down torque but its primary function is noise regulation.
...sounds like a nail to be honest
Eh... how can it sound like a nail? A nail doesn't make any sound.
Unless you managed to get a bucket full of nails and a trampoline, and a beautiful young lady assistant only wearing a bikini to hold the bucket of nails and jump up and down on it repeatedly.
Forgot you live wellsall
stop being "yampy: and "clarting" about, it sounds rough and not like I spent £15k "ackers". now i am "blarting" it is not working. Unfotunately i cannot "deaf it"
"Ta-ra a bit"
The flap sticking is a well known fault. The design is flawed. Just because it is out of warranty is not good enough. It is not fit for purpose. How can it be when most do not reach 15k miles before failing.
Its fine leaving the cables disconnected but the bike is noisier when starting from cold and lower revs. sounds like a nail to be honest
Well, I didn't notice any difference noise wise, when the flap was stuck open. So think that is debatable, unless you have great hearing of course
Hi Jim, It is a common fault - ask the dealers - most people do not spanner their bikes and do not expect to pay £1500 for a replacement.No offense, but the only "drama" I see here is created by the OP. The bike broke, it is out of warranty. It is not a particularly common issue, so it is not an "inherent fault".
Fix the bike and move on. Complaining about it, especially as a first and second (only) posts, is just whining.
Jim
Probably because it was working somewhat. when u disconnect the cables and the flap is fully open, below 2k revs its very noisy. You could of course be use to it?
Read thread below, I know you can use a spanner..........
http://www.ukgser.com/forums/showth...st-valve-seizure/page7?highlight=exhaust+flap
I can use a spanner the point i am making is that for a Premium brand it should not need it. It would not be so bad if it was part of the service schedule