Holley 12 841 Adjustable Pressure Regulator Review

Provides stable high pressure of 2.9psi (with GM in tank TBI pump may behave differently with different pump settings), looks good off and easy to set up. The only downside is that it's a bit pricey, so I'll give it 4 stars.

The detail is nice. impressive, clean and good looking. factory set at 5 pounds is just right for my Chevy 350. I never run out of gas at full throttle. Instantly adjusts to the amount of fuel the engine needs!

I use this to regulate the outboard fuel line pressure. The engine stays powered. I suspect there is little difference in the springs since my regulator is in the lowest case with 2.5 psi running position which is perfect for my application.

This is a well made product which I hope will work. I use this to drop the fuel pressure from the EFI to replace the carburetor as the fuel pump in the tank is a high volume pump and without the regulator it would flood the carburetor. UPDATE: Well it's a bit frustrating after speaking directly to Holly on the phone. regarding my requirements. I have specified that I would like to keep the stock high pressure pump in the tank and what regulator would be best for this application. I was told on…