Each day we get more and more new people building their first projects, others this is their first experience with EFI. We didn't invent, come up with, or solve all the worlds problems with this video, but this is good practice that can never be shared too often so that folks doing their first (or not) wiring jobs will save themselves some heartache.
Clean power and Clean Grounds are essential to keep "Noise" out of the system. You see an EFI system, a dash screen, a boost controller, etc. are sensitive to power like your engine is fuel quality. For an engine, if you put bad fuel in, the performance is going to match. In electronics if you put noisy power and grounds as an input, as an output you will get poor performance from those electronics.
Did you know your battery acts as a "filter" for electrical noise. This means that separating clean and dirty power and grounds can allow you to go to the same post on the battery but have two separate quality of power and ground. As Brad Nagel mentions in this video, wiring on cars evolves and updates as the years progress. So a great option to help save rewiring constantly is to have 4 lugs up front. Clean Power, Dirty Power, Clean Ground, Dirty Ground. This allows you to separate and organize easily without running new runs each time.
Examples of dirty power sources are alternators, starters, anything with an electric motor such as a fan, water pump, fuel pump. Things such as nitrous solenoids are dirty and cause noise as well.
Items needing clean power include EFI systems, ignition systems, sensors, digital dashes, boost controllers etc. as the quality of the signal delivered greatly effects the outputs.
As you may have noticed most EFI and Electrical control boxes (nitrous controller, boost controller, etc) have in the instructions "run power and ground directly to the battery". This is 100% their attempt to make sure you are feeding these units with clean power and ground to minimize electrical noise as its detrimental to performance of their product.
Thanks for tuning in to Tech Tip Tuesday! We hope this has been beneficial and helpful for you!
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