Completely confused on how to route lines for my dual wastegate set up. Im using 2 38MM Tial MV-S external wastegates. And a delphi 3 port boost control solenoid. This is all the info ive found so far any guifance would be appreciated :

 

This is how ive been controlling boost, just splicing off from compressor to each wastegate, simple. But now that im trying to add a boost controller want to make sure i do the plumbing correctly the first time.

 

add a tee before the split from the compressor cover and run another line to the boost controller in. then boost controller out add a tee and run to the top of the two wastegates

 

As scott said. You can literally just take the line off at your turbo, put that on the "outlet" of the boost controller and put a line going from the turbo to the "inlet" on the other side of the boost controller.

Just a side note, If you put on a 4 port you can control the air at the top of the wastegate and get a quicker spool out of it.

 

Really appreciate it, kit came with 3 port so will run that first and look into 4port in the future

 

First google image is all ya need:

 

Thats what i dont understand. Some diagrams use top port and some dont

 

a manual boost controller only uses the bottom port, it controls boost with basically a small ball bearing and a tiny spring. the ball blocks the wastegate signal line from sending a pressure signal to the wastegate. when you screw it in the spring gets stiffer and the ball being held in place takes more force to push past the relief port to let positive pressure at the wastegate and open it. alternatively if you unscrew it out and the ball is easily pushed out of the way and lower boost is achieved.

with a boost solenoid you have a relay that is open and shut based on your ecu's boost control duty cycle and map sensor reading. the bottom port of the wastegate always see's the boost reference pressure but when the solenoid is open it is also sending that same signal to the top of the wastegate. by both top and bottom of the gate seeing the same boost signal the valve is not opened so it remains closed. once the map sensor registers its max boost values the relay closes the top port off only allowing the pressure reference to the bottom port which pushes the valve open in the wastegate and allowing exhaust gases to run around the turbo and controlling the boost.

a manual boost controller is a very simple means of achieving one set boost pressure.

a boost solenoid allows you to change boost given input criteria, throttle position, gear, rpm, etc. so for example you may set 1st gear to 10psi, 2nd to 14psi, 3rd to 18psi and 4-6 to 24psi. this will allow you to maintain traction at wide open throttle and accelerate as quickly as possible. a feature that is used for road racing is tps based. this allows you to say limit boost at part throttle. if im taking a corner at a high rate of speed i dont want to be off the throttle and deceleration, i want to be slowly feeding in throttle, but in certain cases you may be inputting too much boost and causing a lose of traction so you reduce maximum pressure under part throttle conditions to reach maximum grip

 

Excellent summary thanks!

 

Out of curiousity, does anyone run dual external wastegates set up like this?