$500!? Which rock are you looking under? Here’s a cheaper source I googled up...
https://www.nengun.com/apexi/power-f...controller-kit
I was in your shoes before going with the boost controller add-on to my PowerFC. Makes things easier and a lot less crowded around the dash. Plus the cut-off gives me a little piece of mind from over posting if a vacuum hose were to come off.
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