Originally Posted by phughes69 (Post 4354438)

I use to think that EFI was the way to go, but crabs in a boat are simple and cheap. My application is a twin turbo draw thru system making about 600 HP. I figured out that by the time I bought intakes, rails, regulators, injectors, fuel pumps and computers, I was going to be over $5000 for both engines. and that is on the cheap side. I would convert to EFI just to make it easier to start, but $5000 is a tough pill to swallow when I can spend that on props or other stuff, and in the end have almost the same performance as EFI. If you have blown 540's your going to need at least 80 lb/hr injectors.

EZstriper- i also have wide band O2's in my exhaust (Innovate LM-2 about 6 inches after the turbos) I have found that at idle speed, they are not accurate. I have cal'd them and their readings at idle are very eratic. At part throttle, they get better, but I also read the plugs too.

Stormbauer- why are you replacing your carbs? I run Holley 800's on my engines and they are 35 years old. Your old carbs can be rebuilt for a fraction of new.

Originally Posted by phughes69 (Post 4354438)

I use to think that EFI was the way to go, but crabs in a boat are simple and cheap. My application is a twin turbo draw thru system making about 600 HP. I figured out that by the time I bought intakes, rails, regulators, injectors, fuel pumps and computers, I was going to be over $5000 for both engines. and that is on the cheap side. I would convert to EFI just to make it easier to start, but $5000 is a tough pill to swallow when I can spend that on props or other stuff, and in the end have almost the same performance as EFI. If you have blown 540's your going to need at least 80 lb/hr injectors.

EZstriper- i also have wide band O2's in my exhaust (Innovate LM-2 about 6 inches after the turbos) I have found that at idle speed, they are not accurate. I have cal'd them and their readings at idle are very eratic. At part throttle, they get better, but I also read the plugs too.

Stormbauer- why are you replacing your carbs? I run Holley 800's on my engines and they are 35 years old. Your old carbs can be rebuilt for a fraction of new.