Help vacuum for exhuast bypass

[GeneralWheels]

So here is the thing.

I build a complete custom exhaust system 2,5 inch with a vacuum bypass system

I thought it would be easy to find a vacuum line some where in the enginebay but the only line for vacuum I could find was the one for he Brake booster which I don't think is wise to pick vacuum from.

Anyone any suggestions where I can pick vaccuum from for the bypass system.

It's a 1.6 thp

Here is a picture from the bypass system.

[GeneralWheels]

Woeps I meant exhaust

[DS3-NL]

Hi GeneralWheels ,

I also got a valved bypass exhaust looks quite the same as yours but then with dual exhaust tips on both sides(left and right), the exhaust can be switched to full straigthpipe with a touch on the button or can be closed with a nice and sporty sound which is still allowed here . The valves are both connected to the brake booster line, shouldnt be a problem though it's been on my car for 1.5 years havent had any problems with it. If you want i could make some pictures of the control module which controls the valves and how it is placed under my car

See the vids of how it sounds: https://imgur.com/a/wJLVJU1