Flapper Valve.

[DaveB28]

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

20230213_102751.jpg (911.34 KiB) Viewed 2422 times

20230213_102807.jpg (699.19 KiB) Viewed 2422 times

20230213_102758.jpg (556.03 KiB) Viewed 2422 times

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

[burridge01]

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

[Elkinell]

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.]

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.

[DaveB28]

Thanks for the advice folks really appriciate it. Here's the link for the mini wrench set
https://amzn.eu/d/99czprS

[burridge01]

Cheers DaveB28

[Stu]

Servo eliminator as David says

https://www.healtech-electronics.com/products/ese/

remove the cables and motor and leave the flap wide open

[Elkinell]

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.

THAT'S the fecker!

[Randyjaco]

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

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]

That sounds a good idea, as it did seem to be the flapper itself rather than the cables sticking. How did to get the flapper out?

[Randyjaco]

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.

[DaveB28]

Thanks for that, think I'll go with the healtec ese, a bit easier for a ludite like me.

[Elkinell]

Thanks for the advice folks really appriciate it. Here's the link for the mini wrench set
https://amzn.eu/d/99czprS

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 up

[Panman40]

I noticed these recently, they look fairly well made for the money.

https://www.blackwidowexhausts.co.uk/r- ... 8275-p.asp

[Stu]

I noticed these recently, they look fairly well made for the money.

https://www.blackwidowexhausts.co.uk/r- ... 8275-p.asp

I have a set and they are well worth the money