Ben-Stian
15+ Year Contributor
- 131
- 29
- Aug 23, 2006
-
NORWAY,
Europe
This is how I did mine with 2 check valves. The mapsensor you see in the picture, is for the brake vacuum only. I must use 1 digital input (OD-button), 1 analog input (map sensor) and 1 aux output (vacuum pump relay). I have plenty extra I/O also in my ecu. Works fine:Not if you want to also incorporate the stock cars vacuum into the system, I want to only use the pump when the engine is not providing enough vacuum AND the booster is low on vacuum, I cant have the pump sucking on the intake system for the car so a check valve there, a check valve in the stock booster location and a check valve to keep the cars intake from sucking air through the pump causing a vacuum leak...thats IF I'm remembering things correctly, I did this like 3 years ago, but I know I have at least three check valves total, as I said I dont want to have to interact with anything to have power brakes such as switches or buttons and also I dont want to tie up inputs or outputs to my ecu for something so elementary, there isn't enough as it is.
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