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Put a 16” vacuum tube on the brake booster line of my 1990 F150 with a 302 and think I might have gained a little low end torque. Seems like low and mid range are both a bit better. But I really rarely bring the engine up to 3000 rpms since the truck gets such bad fuel mileage, so maybe I am just not used to driving with as much throttle as I have it today. Again, I used an inlet and outlet on the tube, no T.
I think I’ll try the T on the new 5” tube for my civic and see if that does anything.
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