EFI Systems
 

I think I'm going to switch over to EFI this winter. It seems that Holley has a new 8 injector throttle body (sniper) that will support up to 1200 hp and FiTech has a system for 800 and 1200. Both have the ECU mounted on the actual throttle body for really easy installation. Has anyone ran the FiTech? The only downside I can see is that you have to run the O2 sensor all the time with the Fitech. The Sniper hasn't been released yet so the info is semi limited on it. I have dry exhaust so I'm not really concerned about the O2 issue. So any input on this subject.

Do you have to have a fuel return line with this system?

I think the holley has a return line, I believe the FiTech its optional. However not a big deal, my tank has fuel return bungs in it.

That was why I asked, are the return ports factory? I don't have them on my tank. Also I know to be coast guard compliant there are some requirements for return lines. (not trying to be safety police, just mentioning it).

The Fi Tech offers the command center that you can dead head a mech pump into. Fi Tech is also coming out with a MPI kit for not much more money. From what I understand the Sniper is not ideal for blown applications.

This is how I've ran returns:

http://www.cpperformance.com/c-500-f...s-returns.aspx

http://www.cpperformance.com/images/.../620-76300.jpg

How do these two price up against each other, for lets say 700hp..........

If you already have a strong electric fuel pump and a return line both TBs are $995 for up to 600hp. Holley you can lock in a map where as the Fi Tech is strictly closed loop. When I spoke with them a few months ago the only issue with marine use was the O2 sensor getting wet. After playing with my wideband and seeing how much the mixture varies just from the time of day I'd go closed loop if that's an option.

Super Chevy's list.
http://www.superchevy.com/how-to/eng...-market-today/

I was really digging the FiTech system for my upcoming project until I heard you can't lock in a tune. I thing on a boosted marine app that having an O2 sensor flake out and lean the engine out is not something I want to gamble on. Holley isn't out into reality yet either but also won't handle a blow through configuration like the FiTech.

I cant believe that it wouldn't take but a simple software change for the FiTech to be able to lock a tune in like the Holley. Anyone have a friend in the company and can get them to make the change? haha

Innovative makes a bung extender that dramatically protects the bung. I'm running a wideband and if it survives the season I'm going closed loop next year, but I'm keeping my wideband working in the other header to monitor things. If the FI sensor craps out I can use the other one to get home.
http://i622.photobucket.com/albums/t...2060A1E833.png