Fuel pressure question
When you turn the ignition on does the fuel pumps hold fuel rail pressure? Recently installed a lt4 in a friends 69 and ignition on the fuel pressure goes to 40ish and then drops to zero. Tested this with a online -6an fuel pressure gauge at the fuel inlet at the engine. My gmpp ls3 swap it will hold the fuel pressure with key on
Secondary fan/ AC fan activation
I noticed on a gmpp tune the second fan doesn’t come on till 221 degrees. What do you set your fan settings at? Can you activate the secondary fan with the ac on?
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Brian Hobaugh SCCA National Tour June 2014
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