I have a 2013 EB and have just recently installed a Roush mechanical boost gauge with vent pod. After researching it looked like most people were connecting the vacuum/boost line to the line right behind the throttle body that comes off the intake manifold. I believe some previous models used to have a unused nipple in this area but mine does not so I had to T into the line below. After doing so all seemed well until I noticed a violent flutter under vacuum but it's not all the time. It comes and gos like a Solinoid is opening and closing. When it's not doing it... It's perfect. Am I in the wrong spot or am missing something? Any help would be greatly appreciated!