The vacuum line is on the throttle body, so which cylinder head is not relevant. And as I thought I clearly stated, 'the vacuum line is on the upper right side of the throttle body (left if you are facing the engine)'. Which is to say the vacuum line is on the vehicle right side of the throttle body. Or if you prefer referencing cylinder heads, it would be on the rear cylinder head side. AKA starboard. AKA offside.

Last edited by Bitsobrits; 18/10/20 04:34 PM.

Steve
Late 2012 M3W