M52b28 Exhaust flap
Moderator: martauto
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Dan_556
- E30 Zone Newbie

- Posts: 63
- Joined: Sun Mar 28, 2010 11:00 pm
- Location: St Austell cornwall
Just taken the exhaust off the 2.8 and I noticed it has a butterfly in one of the pipes what's this for and is it need or no?
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E30BeemerLad
- Married to the E30 Zone

- Posts: 16806
- Joined: Mon Mar 28, 2005 11:00 pm
- Location: Norfolk
not needed, just to make more noise when you give it the beans
ECU will show a fault code, but won't affect performance or running
ECU will show a fault code, but won't affect performance or running
