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Matthew Jeschke
Full Access Member
Welp I've got an aftermarket pump in the truck / sending unit now. Saved all my notes:
It didn't solve my fuel pressure problem lol I think what happened is OEM is now selling a single pressure in their regulators. They must have taken pressure from the flex fuel L59 engine and made the gasoline regulator the same. Despite these two regulators & fuel rails are different sizes!
I'm going to buy a regulator that specifically says 55 PSI and see if it raises the pressure. I'm out of ideas and nobody makes a drop in adjustable regulator.
NBS 2nd gen Tahoe Fuel Pump Upgrade - Matthew Jeschke
Have you been chasing fuel problems? Bad gas mileage on your Chevy Truck? Then you are in the right place. I built up a 2001 Tahoe with a LQ9 (6.0L LS). Initially Fuel mileage was BETTER than the smaller 5.3L LM7 I replaced. However, somewhere along the line my gas mileage dropped by nearly...
matthewjeschke.com
It didn't solve my fuel pressure problem lol I think what happened is OEM is now selling a single pressure in their regulators. They must have taken pressure from the flex fuel L59 engine and made the gasoline regulator the same. Despite these two regulators & fuel rails are different sizes!
I'm going to buy a regulator that specifically says 55 PSI and see if it raises the pressure. I'm out of ideas and nobody makes a drop in adjustable regulator.
