FITECH EFI 600 Basic and Command center intall with pics, factory tank

[GR8-68]

So as of right now I really have not invested anything so I can go either way with what I want / need to do. I had planned to go with a Boyd rear tank and a electric pump, by the sounds of what I am reading though it would be best to use the FCC just for the return line aspect of it.

[steveo3318]

That's 6 one way half a Dozen the other. I used the fuel command center because I have the factory behind the seat and don't care to replace it. It is brand new. Now that being said if I had thevrear tank I would of went with either an inline pump or in tank pump. Yes they are louder but don't clutter up the engine bay. In reality with the FCC I now have two points of failure instead of one. Either my mechanical pump or electric pump could die. With an in line or tank you drop the mechainical which I am all about one less item to worry about. I don't see any issues in my near future but if I HAVE to put a rear tank in I will most likely ditch the FCC and go in tank. The FCC has never given me any issues other than overheating one time and that was my fault for not lowering the idle flow parameter. Once it cooled down and I set the parameters never another issue what so ever. This info is really only based on engine bay appearance!!! I might of been saying go FCC if I had the inline pump after hearing in whine forever. I will say in tank or FCC now that I think about how loud a in line is. All three have to have the return in the end.

[NC_John]

Originally Posted by steveo3318

That's 6 one way half a Dozen the other. I used the fuel command center because I have the factory behind the seat and don't care to replace it. It is brand new. Now that being said if I had thevrear tank I would of went with either an inline pump or in tank pump. Yes they are louder but don't clutter up the engine bay. In reality with the FCC I now have two points of failure instead of one. Either my mechanical pump or electric pump could die. With an in line or tank you drop the mechainical which I am all about one less item to worry about. I don't see any issues in my near future but if I HAVE to put a rear tank in I will most likely ditch the FCC and go in tank. The FCC has never given me any issues other than overheating one time and that was my fault for not lowering the idle flow parameter. Once it cooled down and I set the parameters never another issue what so ever. This info is really only based on engine bay appearance!!! I might of been saying go FCC if I had the inline pump after hearing in whine forever. I will say in tank or FCC now that I think about how loud a in line is. All three have to have the return in the end.

But if you run an in-tank pump your return line can be a lot closer to the tank (assuming you would use the corvette style filter/regulator). Isn't the FiTech truly returnless if you don't have the command center or is there a return line coming back off the EFI unit itself? Its been a while already and can't remember.

The command center is just too darn big to hide under the hood and adds a lot of extra lines running up there (fuel supply to CC, fuel line from CC to EFI, vent/return line).

[steveo3318]

Fitech body has a return line on the rear for use with either intank or in line

[NC_John]

Originally Posted by steveo3318

Fitech body has a return line on the rear for use with either intank or in line

I remembered extra fittings on the TBI unit. Do you have to use a return if you run the corvette regulator?

I don't like the extra plumbing of return lines- more places to leak. I made sure my LS was new enough to have the returnless fuel system. I believe 03 and earlier require it.

[steveo3318]

I am not up to date nor have I ever heard about a corvette regulator. I have never researched it so I cannot elaborate

[NC_John]

Originally Posted by steveo3318

I am not up to date nor have I ever heard about a corvette regulator. I have never researched it so I cannot elaborate

If you are running an in-tank/inline pump, its an easy way to regulate your pressure. It feeds fuel at 58 psi forward and sends the rest back to the tank via a return line.

http://www.tanksinc.com/index.cfm/pa...rod/prd425.htm

I'm going to run one with my boyds welding tank and aeromotive pump.

[Lancialonnie]

I was all set to order the FCC to get started putting an FITech system together, that way I could run the vent tubing and wiring and have the fuel system ready to go. But then I read about needing to have a vented fuel cap and now I'm not sure what to do. I have an under bed tank with a rollover valve that I am planning on tying the return line to but, I have the boat type fuel cap that threads in (comes with a fork like key to open) and it is not vented. Do they make these in vented caps or would I need to go with a different fuel cap?

[steveo3318]

Originally Posted by Lancialonnie

I was all set to order the FCC to get started putting an FITech system together, that way I could run the vent tubing and wiring and have the fuel system ready to go. But then I read about needing to have a vented fuel cap and now I'm not sure what to do. I have an under bed tank with a rollover valve that I am planning on tying the return line to but, I have the boat type fuel cap that threads in (comes with a fork like key to open) and it is not vented. Do they make these in vented caps or would I need to go with a different fuel cap?

Drill and tap a hole in the top use a sealant or reflow tape

[88Stanger]

Originally Posted by Lancialonnie

I was all set to order the FCC to get started putting an FITech system together, that way I could run the vent tubing and wiring and have the fuel system ready to go. But then I read about needing to have a vented fuel cap and now I'm not sure what to do. I have an under bed tank with a rollover valve that I am planning on tying the return line to but, I have the boat type fuel cap that threads in (comes with a fork like key to open) and it is not vented. Do they make these in vented caps or would I need to go with a different fuel cap?

i have my tank in the bed also and I have the same style cap, but mine has a vent built into the tank that i ran to the back of the truck, so the tank is vented and I think that is the important part. So i will run a new vent line all the way back to this vent line and tee into it so the FCC is vented. I assume this work.