Seller notes

We put this GM adjustable fuel pressure regulator kit together w/ new heavy duty regulator rubber so you can tune your stock or modified TBI motor for more power and better fuel mileage. This includes a custom wound regulator spring for adjusting from 15-25psi - or install your stock spring for 11-15psi. May require drilling a 1/4" hole in the bottom of your injector pod casting for adjustment screw clearance. Fits the following applications: 1986-95 V6 or V8 2.8L, 4.3L, 5,0L, 5.7L and 7.4L mid ...

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