420a-T Fuel Setup Help

[grothe3297venge]

right so there for if u were to put a turbo on the car it should give u a positive boost read out

No, it wont give a "positive" read out. Once it sees positive pressure you will endure fuel cut..

 

[LeeSD1]

No, it wont give a "positive" read out. Once it sees positive pressure you will endure fuel cut..

Exactly, as the ecu was programmed for N/A and not a turbo, if it reads "positive" boost pressure or anything more than atmospheric pressure then it will cut off, the stock map only goes up to 102Kpa i think it was.

 

[Peej420a]

Ok, So I did some more thinking about "Fuel". I have a 97' Returnless Fuel system. Would I Still need and FMU Since I have the 255LPH Fuel Pump? There is Nowhere for the Pressure to go once the pump puts the the pressure in the rail right? (also have an AFPR) Its still doesnt seem to make sense to run a return line. (If the answer is out there, I cant find it.)

 

[VelocitàPaola]

Ok, So I did some more thinking about "Fuel". I have a 97' Returnless Fuel system. Would I Still need and FMU Since I have the 255LPH Fuel Pump?

Yes, you need both, not one or the other.

There is Nowhere for the Pressure to go once the pump puts the the pressure in the rail right? (also have an AFPR) Its still doesnt seem to make sense to run a return line. (If the answer is out there, I cant find it.)

You don't, however, need an AFPR if you have an FMU. You should convert to a return-type fuel system if you'll be using either an AFPR or FMU, though.

 

[Peej420a]

Yes, you need both, not one or the other.


You don't, however, need an AFPR if you have an FMU. You should convert to a return-type fuel system if you'll be using either an AFPR or FMU, though.

Ok, LAST question about this: Is the breather line that goes to the charcoal canister on the fuel pump housing ok/Safe to use for the FMU return on the 97' Or do I need the 95' Fuel pump housing (is there a difference?) I have them both, but i cant seem to find the 95' Pump housing. I had 2 95' models and a 97'. Just a Little FYI (I Wrecked the first 95'(Still have it), Junked the second and driving the 97').

 

[VelocitàPaola]

Ok, LAST question about this: Is the breather line that goes to the charcoal canister on the fuel pump housing ok/Safe to use for the FMU return on the 97' Or do I need the 95' Fuel pump housing (is there a difference?) I have them both, but i cant seem to find the 95' Pump housing. I had 2 95' models and a 97'. Just a Little FYI (I Wrecked the first 95'(Still have it), Junked the second and driving the 97').

The '97 already has a "return" line, it's just very short -- just extend it with fuel injection pressure rated fuel line.