Flapper Valve.
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Flapper Valve.
My exhaust flapper valve seized and a warning light has appeared on my dash. Headers were replaced under warranty last time it happened, but now its out of warranty BMW dont want to know unless I have £1600 to give them. Had a problem getting some of the screws out due to the restricted space and found this on Amazon
for £17. Money well spent and flapper valve now working, until the next time. Anyone have any idea if the flapper can be removed? How easy is it to do? And will it effect any future MOT due to its emmissions? Many thanks-
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Re: Flapper Valve.
Not sure about removing it but it won't affect the mot.When mine went I replaced the whole system with Arrow headers and exhaust.All for a grand and never have to mess with it again
That's a tidy little set for the money,got a link
That's a tidy little set for the money,got a link
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Re: Flapper Valve.
Can't remember where I read it but the valve is more to do with getting around noise limits than emissions. There is a plug in bit of electrickery that goes under the seat that fools the canbus into not lighting up the fault if you disconnect the servo.
- David.
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Re: Flapper Valve.
Disconnect the flap leaving it in the fully open position, remove the cables and actuator then fit a servo buddy to prevent the warning light on the dash coming on.
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Re: Flapper Valve.
Thanks for the advice folks really appriciate it. Here's the link for the mini wrench set
https://amzn.eu/d/99czprS
https://amzn.eu/d/99czprS
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- Stu
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Re: Flapper Valve.
Servo eliminator as David says
https://www.healtech-electronics.com/products/ese/
remove the cables and motor and leave the flap wide open
https://www.healtech-electronics.com/products/ese/
remove the cables and motor and leave the flap wide open
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- Randyjaco
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Re: Flapper Valve.
I removed my entire flapper butterfly last year. The pivot still moves in place, but there is just no butterfly to restrict exhaust flow. It had no negative effect on performance. What did happen was that I got some minor popping sounds from time to time when shifting gears.DaveB28 wrote: ↑Wed Feb 15, 2023 4:26 pm My exhaust flapper valve seized and a warning light has appeared on my dash. Headers were replaced under warranty last time it happened, but now its out of warranty BMW dont want to know unless I have £1600 to give them. Had a problem getting some of the screws out due to the restricted space and found this on Amazon20230213_102751.jpg20230213_102807.jpg20230213_102758.jpg for £17. Money well spent and flapper valve now working, until the next time. Anyone have any idea if the flapper can be removed? How easy is it to do? And will it effect any future MOT due to its emmissions? Many thanks
- Randyjaco
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Re: Flapper Valve.
I removed the muffler and used an electric die grinder. I was able to get the burr right along the pivot axel. Took about an hour to get it all off. There are probably easier ways.
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Re: Flapper Valve.
Seemed too good to miss, It should be here on Sunday. The thing I bought to make the order up so I got free postage is supposed to arrive today. If it does I'll put a picture upDaveB28 wrote: ↑Wed Feb 15, 2023 7:18 pm Thanks for the advice folks really appriciate it. Here's the link for the mini wrench set
https://amzn.eu/d/99czprS
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Re: Flapper Valve.
I noticed these recently, they look fairly well made for the money.
https://www.blackwidowexhausts.co.uk/r- ... 8275-p.asp
https://www.blackwidowexhausts.co.uk/r- ... 8275-p.asp
- Stu
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Re: Flapper Valve.
I have a set and they are well worth the moneyPanman40 wrote: ↑Mon Feb 20, 2023 8:07 am I noticed these recently, they look fairly well made for the money.
https://www.blackwidowexhausts.co.uk/r- ... 8275-p.asp