TDIClub Enthusiast, Veteran Member
- Jun 11, 2002
- Nashua, NH, USA
- 2014 BMW 535xd ///M-Sport, 2012 BMW X5 Xdrive35d, former 3x TDI owner
Could be....if the zip ties were used to pull the actuator to simulate vacuum applied to it, then YES, they are closing off the smaller ports instead of keeping them open.TDI'ed said:Awesome, this post really cleared things up for me. So the actuator to unplug is the one immediately below the EGR correct? I'll do this tomorrow and see my results. I wasn't able to see those pictures before.. very beneficial. When I was messing with the switch manually the spring did feel quite strong. So if this is correct then those who have held there linkages 'open' with zip ties have in effect been closing off the smaller ports?
MrCHill and I played with an intake manifold assembly to be sure we were doing the right thing. We weren't sure what the default position was with no vacuum applied to the actuator so we studied a BEW PD 2-piece IM assembly laying around in the shop. It isn't obvious with the IM installed on the engine. You have to look at the IM assembly all by itself to see how it works with the actuator attached.
Bottom line is the mod is VERY simple: Unplug the vacuum hose from the IM actuator and plug the end of the hose with a golf tee or something similar. The smaller openings in the IM assembly will remain OPEN all the time.