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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Exhaust Flap Rattle

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      04-12-2019, 11:44 AM   #23
sethwas
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Originally Posted by Joe T. View Post
The dealership also quoted a hilarious $90 to install it..
They quoted you a price to do a recall/under warranty work?

Seth
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      04-12-2019, 09:37 PM   #24
Joe T.
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Originally Posted by sethwas View Post
They quoted you a price to do a recall/under warranty work?

Seth
I don't think it had been recalled yet and the car was just out of the factory warranty. I just laughed it off and wired the flap open myself.
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      04-15-2019, 09:45 AM   #25
Climate Changer
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Quote:
Originally Posted by Climate Changer View Post
Quote:
Originally Posted by Joe T. View Post
I had the pin break on my old 228 before I traded it in. I bought a new one for $8, but I couldn't ever get the actuator to stop in the right place to line up the new pin. The dealership also quoted a hilarious $90 to install it. I ended up just wrapping a bit of wire around the flap to keep it open at all times and that worked just fine for me.

My M235 has the M Performance Exhaust and I hear the flap rattling a little on startup, but once the flap is open I don't hear it at all. At this point, I think I'd prefer that there was no flap to begin with.
I’ve been doing research on all bmw models with the flap rattle on the forums.
Most do say when they mod the faps to stay open the rattling stops.
I came upon an easy way to keep the fap permanently open by removing fuse 146. I have the 230i exhaust. For the M235i/M240i fuse 146 & 147 in the trunk.
I removed the fuse while the valve was open and so far one day later no rattle.

I’ll update in a few more days.

I did hear it’s difficult to install the pin spring clip.
Quote:
Originally Posted by Climate Changer View Post
Quote:
Originally Posted by Joe T. View Post
I had the pin break on my old 228 before I traded it in. I bought a new one for $8, but I couldn't ever get the actuator to stop in the right place to line up the new pin. The dealership also quoted a hilarious $90 to install it. I ended up just wrapping a bit of wire around the flap to keep it open at all times and that worked just fine for me.

My M235 has the M Performance Exhaust and I hear the flap rattling a little on startup, but once the flap is open I don't hear it at all. At this point, I think I'd prefer that there was no flap to begin with.
I’ve been doing research on all bmw models with the flap rattle on the forums.
Most do say when they mod the faps to stay open the rattling stops.
I came upon an easy way to keep the fap permanently open by removing fuse 146. I have the 230i exhaust. For the M235i/M240i fuse 146 & 147 in the trunk.
I removed the fuse while the valve was open and so far one day later no rattle.

I’ll update in a few more days.

I did hear it’s difficult to install the pin spring clip.


it's been a few weeks since the mod and it works 95%. it rattles occasionally now for a few minutes only.
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      09-02-2019, 02:47 PM   #26
maverick83
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On my M135 I removed 4 bolts from the actuator, removed the spring and bent it open. Put it back in and all rattles gone.

Look at my post on Babybmw

dreadful exhaust flap rattle .
https://r.tapatalk.com/shareLink?sha...8;share_type=t

Removing the fuse logs an error code in the DME btw
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