Diy Tuning

[rollex]

Problem with return less is you have a lot more things to go wrong. A simple mechanical fuel regulator is much simpler and will maintain a stable pressure with basically no setup.

 

I like Ralphs setup, eg a return pump system but with a pump speed regulator so you aren't running it at full speed at idle. Very simple but best of both worlds imo, only con is you retain the return fuel line, but not really that big a deal.

 

Ralph I have an idea, retain the return fuel system but setup a speed signal from the PCM (eg enable return fuel flow) with no pressure sensor attached, I'm sure you could effectively turn it into a dumb speed controller where it winds the speed down at low loads. Then you don't need an external speed controller like you have now.

Edited 12/09/17 04:11 AM by rollex

[Ralph Wiggum]

External speed controller I have now is built into the Reg. No pressure sense for pressure control bothers me.

[rollex]

Sounds pretty simple then. Would there really be any benefit to using a return-less mustang style one then?

[Ralph Wiggum]

Reduced cost if all you need is a pwm controlled pump, PCM Speed control signal output and a FPS.

[eff xr6t]

Would still require a solid state relay for running the pump? Unless the PCM has a decent output capable of the current draw?

[Boosting_G6E]

  On 11/09/2017 at 11:41 PM, DarrylC said:

Ford does use a returnless system in one fuel type in the Australian Falcons. It can be done.

 

Only available in PCMTec

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Hah and I think I own one actually haven't bothered to do a thing am tempted to buy the sct x4 for sale but ford tune is pretty spot on from factory I can't believe I said that hah

 

a far more advanced system than ALL your xr6t's running "heavy duty" side feed v10 viper injectors face palm 

Edited 12/09/17 07:40 AM by Boosting_G6E

[Puffwagon]

  On 12/09/2017 at 4:32 AM, Ralph Wiggum said:

No pressure sense for pressure control bothers me.

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You already have a vacuum/boost signal controlling pressure. Chuck a fpg next to your boost gauge and you can see it from the cabin. It'd actually be a pretty handy street tuning addition.

 

  On 12/09/2017 at 5:46 AM, Ralph Wiggum said:

Reduced cost if all you need is a pwm controlled pump, PCM Speed control signal output and a FPS.

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And a fuel rail including fittings, labour and tuning for those that can't do it themselves.

 

It's an interesting concept for discussion but it in my ohmo opinion just a reg and intank walbro (without taking into account surge issues) would take care of better than 99% of applications and is still cheaper.

 

Do it though.

 

You could build your own unit from some arduino related stuff that could control the pressure and flow pretty easily I imagine.

[Boosting_G6E]

what powers Ralph running / pump set up 

 

I guess it's just the price we got to pay though a noisy pump at idle hah but for your own car it would be nice addition to show your skills 

[Puffwagon]

  On 12/09/2017 at 8:22 AM, Boosting_G6E said:

what powers Ralph running

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All of it jk.

 

Yep it has it's merits and if he can sort something out with it then it will be interesting to see in action. 

[Boosting_G6E]

ya would be very nice would even keep the heat of the fuel down marginally but how many "customers" would opt for this option?