What size inlet/outlet are on that resivour? The factory lines are 3/4", those look kinda small and might pose a restriction on flow?
Also I found this on MB world a while back, might be helpful to know.
Originally Posted by
splinter
Ensure that the intercooler fluid circuit has been bled of all of its residual air. Because the core is at the highest point of the system, an air lock is a naturally occurring phenomenon.
MB’s procedure necessitates activating the pump while plugging (“pinching off”) the intercooler core fluid return line. Upon proper evacuation of the system, the I/C vent hose (yellow) that normally connects to the anti-freeze/anti-corrosion fluid reservoir is to then be observed discharging only a steady stream of fluid.
Also there is plenty of room in the trunk for a remote setup without losing cargo space. You just have to rip out the styrofoam on one side and relocate some electronics to the wheel well. My budget ran out on this project but I hope to have it finished soon.
Pics below