I have a 3 port mac valve boost controller. need help how to plumb it. running an external wastegate. from what ive found i run the top port from the wastegate to tthe left opening(2) then bottom port from wastegate to a tee to the (1)port on mac valve but where do i tie into compressor outlet?

 

can i run that line to the fitting on the intercooler piping?

 

No Tee.

Yes to I/C piping fitting.
That (compressor out) goes to MAC port 3.
Port 2 goes to Wastegate.
Port 1 is open to atmosphere (vents).

DNM

 

my turbo housing doesnt have a vacuum port, i have the top port and bottom port on the external wastegate. i also have a vacuum port on my intercooler piping to the turbo. my mac valve has 2 inlet ports and 1 breather

 

You’ve got a turbo now, stop calling them vacuum ports you just need a source that shows boost pressure, the one you said you have on your intercooler piping will work.

dnmakinson is giving you internal wastegate plumbing. Follow these instructions for your external gate: https://www.diyautotune.com/product/...-solenoid-kit/

 

Thank you everyone for the much needed help

 

I have TiAL EWG on my remote mount setup and have it configured as per documentation for dual port EWG, seems to be working a-ok. Had to tap my compressor housing for the fitting that runs to a tee (sounds like you can use intercooler pipe fitting), which then goes to Port 1 and the bottom of the EWG. Top of EWG goes to Port 2. Port 3 is open.