Alright I joined this mod today, I found that the 5/16th vacuum plug didn't stay in the actuator so I went back and bought one size down 5/32. This fit nice and wasn't loose at all. now for the tube I left the 5/16th male to male plug and the 5/16th plug on it. it was tight getting on there so it might stretch out the hose to the point where it won't stay on the actuator if I ever reverse the mod but if thats the case I will just cut a little off the hose.
Just thought I would share. Maybe the 135i and the 128i have a different size.
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