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Okay, so: Pablo has a 22RE. Trixie has a 22R. The biggest difference inside the engine is that the 22R has an eccentric on the cam to drive a mechanical fuel pump. The 22RE has an electric fuel pump in the gas tank.
I'm planning to de-smog Pablo. I'd rather make more NOx to fall in the middle of the Atlantic than burn more fuel. I've replaced the injectors and there's still a slight hesitation somewhere, and I'm not seeing the mileage increase yet. I'm also concerned that I've installed something improperly and may have a minor fuel system leak.
What if I decide that the EFI is more trouble than it's worth, and want to install the 22R Manifold with a Weber DGV 32/36 carb? I have a high pressure (50 psi?) fuel pump in the tank, and can't install a low pressure mechanical pump on the engine without removing and replacing the cam. Can anyone tell me about fuel pressure regulators that could take the pressure down to the 3 psi I'd need to run the carb?
Everything I'm reading is that EFI and the OEM carb have about the same fuel economy, but the Weber DGV can beat them, which makes it very tempting. Yes, I have Trixie's motor with the eccentric and fuel pump, and I could just swap motors rather than heads, but I'd like a simpler option.
Once I get the engine mechanics taken care of, I can really start on the aero work.
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