MAC Boost solenoid
 

Does anyone have a good diagram on wiring and hose routing for the MAC on a single turbo system?

I believe the two wires go to the Evaporator solenoid. But, I'm not 100% on where that is...the one hooked to the back of the intake with the line going to the rear of the car?

I have found a few different diagrams online but I am not 100% on the hose hook up as well?

Any help would be appreciated!

Yup thats exactly it and specialtyz makes a harness for 9 bucks, you just splice it to your mac solenoid wire orientation doesn't matter, DO YOU HAVE SINGLE OR DUAL WASTEGATES?

https://www.specialtyz.com/sz-boost-...connector.html

Daul wastegate

I would do them like this except with your bp kit you would go off the charge pipe nipple instead of the turbo, I have my single routed the same way but with one wastegate

https://www.3si.org/forum/attachment...l-img_5093.jpg

here is another way but i would do the first one but you could always ask your tuner what way he would prefer

https://www.3si.org/forum/attachment...l-img_5094.jpg

I do have the BP kit. I figured I should ask my tuner what he perfered. SO I asked Moncef at admin Tuning which way I should hook up the hoses. He referred me back to Sasa. FIgured asking here would be my best bet!

Thanks, I just ordered the Pigtail!

So, would I split “B” to both wastegates? And leave the “A” open to atmosphere? Or block “A”?

That is an unusual configuration on your solenoid. Usually there is pressure in port (from a charge pipe or turbo compressor housing) and then a port out, which in this case would split, and go to both wastegates tops.

Is there a diagram or model number on that solenoid? If so, post it up, and we'll get it figured out.

Is it this?
Just T your top ports together and T your bottom ports since you have dual wastegates

https://www.full-race.com/wp-content...ontent-2-1.jpg

Pretty good description here on how it functions
https://www.full-race.com/store/borg...ol-solenoid-1/

If your tuner does not know how to plumb it I'd be weary on tuning the duty cycle on it. Seems like it more sensitive to changes compared to the 3 port.

Makes since I guess, I will try it like that diagram shows. If i need to reverse side A and B I can.

I wouldn't bother teeing the boost reference source.

I drilled the spot welds on the evap solenoid bracket to remove the evap solenoid itself and added holes for the new MAC 3 port I am using. I did this since it would put the MAC solenoid conveniently next to the 8mm port that the evap system was using.

http://www.the370z.com/members/sirni...e6ec6aac9.jpeg

This does interfere with the engine cover if you plan on reusing that

I am pretty sure you want your source to be on the charged side of the throttle bodies? I will not have to "T" the source hose if I hook it as shown in the diagram. I will have to "T" the lines going to the waste gates.

That source is on the intake manifold so it will see vacuum and boost. I am using the other port behind the drivers side throttle body to feed the boost gauge and fuel pressure regulator.