Vacuum activated exhaust cutout

[Wil]

Hi everyone,

I've been thinking about modifying my stock midpipe in order to add a vacuum-activated exhaust cutout.
I currently have an electric exhaust cutout in my stock muffler and I absolutely love the versatility of this system.

I want to go a step further and be able to go even more coconuts at WOT.

But, unfortunately, I cannot seem to find any piece of information regarding the install of such device and system.

At least, I've found a kit that you can view here, on AliExpress:
http://bit.ly/2tgPMCo

From what I've understood, the vacuum source comes from the intake manifold.

Can anyone provide some schematic/layout/drawings/pictures and explanation on how such system does work?

That would be very very appreciated :-)

If I find enough info to "take the plunge" and modify my midpipe, I would definitely do a thread for people who would want to do the same!

Thank you very much in advance.
Wil.