Boomdeeze
10+ Year Contributor
- 2,140
- 373
- Jul 5, 2009
-
Independence,
Minnesota
I have read through the vacuum pump threads and none really go into detail on setup or how efficient they are. I was hoping to make a thread where anyone interested in setting up a vacuum pump could post here with questions or setups they have made.
I am looking to make a setup where the pump is only activated when I am approaching the staging light. I just bought the Audi brake vacuum pump off Ebay for $35 shipped. I have an automatic with low vacuum (-13inHg) so I need some time to spool and hold it at the line as I approach. I will need to inch forward so having max braking power is important. I have drawn up a diagram of how I am going to install my pump and wanted to make sure that what I am thinking will work. Here is the diagram:
When the pump is not activated, the setup should work just as it would as OEM. The vacuum is supplied by the intake manifold and the vacuum pump valve should close. The trouble starts when I need to brake when I am stalling at the line and needing to inch forward into the lights. I would activate the vacuum pump which would close the OEM check valve(vacuum pump has higher vacuum) and open the second valve allowing the vacuum pump to supply the brake booster with more vacuum. So in theory, the only time the vacuum pump check calve would open would be when the pump is activated. Am I thinking this correctly in my head or is it too early in the day to plan this?
I am looking to make a setup where the pump is only activated when I am approaching the staging light. I just bought the Audi brake vacuum pump off Ebay for $35 shipped. I have an automatic with low vacuum (-13inHg) so I need some time to spool and hold it at the line as I approach. I will need to inch forward so having max braking power is important. I have drawn up a diagram of how I am going to install my pump and wanted to make sure that what I am thinking will work. Here is the diagram:
You must be logged in to view this image or video.
When the pump is not activated, the setup should work just as it would as OEM. The vacuum is supplied by the intake manifold and the vacuum pump valve should close. The trouble starts when I need to brake when I am stalling at the line and needing to inch forward into the lights. I would activate the vacuum pump which would close the OEM check valve(vacuum pump has higher vacuum) and open the second valve allowing the vacuum pump to supply the brake booster with more vacuum. So in theory, the only time the vacuum pump check calve would open would be when the pump is activated. Am I thinking this correctly in my head or is it too early in the day to plan this?
Last edited: