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32 However, don't forget the fuel pressure regulator requires a vacuum signal to determine engine load. We tapped into our Hose Candy [www.hosecandy.com; (866) 760-848] silicone vacuum hose with a small section of line and an extra Hose Candy fitting. We're not hanging up our plumber’s cap just yet though, as our brake system and power steering plumbing is coming up next. Stay tuned!