S/C install question with vacuum lines, 2018+

[andrewtac]

Paxton has shipped, I’ve read the directions multiple times. I am about 99% sure I have it figured out, but I want to make sure on a few of the lines up front. I am going to run a stubby filter directly attached to the Paxton so I need to do things slightly different than the directions.



With the 2018+ Paxton kit the throttle body has a spacer with a barb for a vacuum port for the bypass valve, makes that easy. I have two more items that need vacuum, the switch for the FC3 fuel pump controller and a MAP reference for the fuel pressure regulator. For the FC3 switch I figured I could T off the vacuum line going to the bypass valve. For the fuel pressure regulator, I was thinking about using the port that hose #1 in the picture. The directions have you hook hose#1 up to the intake tube on the Paxton, well running the stubby filter I will not have an intake tube.



My question is with the aspirator, what does it do? The top hose (#3) goes from a vacuum source to the aspirator then to the power booster. The bottom hose (#1) the vacuum source is on the right and then it goes to the intake. I was thinking about pulling vacuum from right side of the aspirator on line #1, putting a T in the line, then capping off the left side of the aspirator. Or can I just put a barb in the right side and remove it from the aspirator completely and cap left and right sides on the bottom. I wasn’t sure is the aspirator is open inside and the brake booster shares vacuum from both inputs.



Line two I plan on venting to atmosphere, drivers side PCV. At some point I’ll either add a vented catch can to both sides or put breathers on.

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[Jackson1320]

OK I did the same thing on my procharger and you’re really overthinking it. what you do is you take the aspirator and you insert it into the trashcan. Then you run one vacuum to your brake booster with a check valve so it can not get boost only vacuum. Run one line to the evap if you are keeping it. And one for boost reference cap any of them off that your not using. Put a filter on the driverside valve cover.
If you would like pictures of how I have mine setup let me know

 

[mikengail]

I have a question about the necessity of the brake aspirator. I'm enlarging my MAF tube and the larger rubber tube doesn't have any holes for the driver's side PCV and the brake aspirator line. I'm going to be using a breather filter for the PCV, but what do I do with the open end of the brake aspirator line that's made to attach to the rubber MAF tube? See pictures...

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