Going from return less fuel to return style

European strategy specific for 2004 ford mustang euro spec but also modified by SVT and used on the 03/04 cobra. Can be used on all 2002-2004 mustang v8 and v6 manual and automatics. Supports automatic 4r70w control. Can be used on 2001-2004 ford F-150 4.6 / 5.4 ecu's if configured correctly as well.
MBSVT
Posts: 19
Joined: 2021 Feb 15, 18:31
Location: Fort Lauderdale Florida 33309
Vehicle Information: Ford 1992 LX vert AM3 342 CID TFS heads 10.1 CR Long Tubes Holley Systemax Intake Accufab 75mm TB #30 INJ T5 trans 3.73 gears 150 shot NOS

Going from return less fuel to return style

Unread post by MBSVT »

I'm going from return less fuel to return style fuel system in my 03 Cobra (tuning for E 85)
Also, I will not be running the FRPS... What changes do I make in the tune to run return style fuel system without the FRPS?
Thank you
MB
decipha
Posts: 4950
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Going from return less fuel to return style

Unread post by decipha »

Thats a very stupid idea.

The FRPS will save the engine if fuel pressure drops which is the #1 cause of all engine failures.

In any case its all on the homepage under tips
MBSVT
Posts: 19
Joined: 2021 Feb 15, 18:31
Location: Fort Lauderdale Florida 33309
Vehicle Information: Ford 1992 LX vert AM3 342 CID TFS heads 10.1 CR Long Tubes Holley Systemax Intake Accufab 75mm TB #30 INJ T5 trans 3.73 gears 150 shot NOS

Re: Going from return less fuel to return style

Unread post by MBSVT »

Well then, I had no idea. Since you put it that way.
I appreciate your input!!! I will NOT be running my new engine without the FRPS
Thanks MB
BTW Dumb question, if FRPS see low fuel pressure how does it saves the motor?

The car is new to me, and I notice that there is no FPDM and obviously no FRPS The pumps are wired to two relays one for each pump. The grean/yellow wire is used to trigger the two relays. Should I I also install a FPDM?
Just what to do the right thing.
Thank MB
decipha
Posts: 4950
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Going from return less fuel to return style

Unread post by decipha »

The deltap multipliers compensate for the new fuel pressure.

Nope no FPDM needed as thats for controlling pump voltage which isnt needed sinxe your return style.
MBSVT
Posts: 19
Joined: 2021 Feb 15, 18:31
Location: Fort Lauderdale Florida 33309
Vehicle Information: Ford 1992 LX vert AM3 342 CID TFS heads 10.1 CR Long Tubes Holley Systemax Intake Accufab 75mm TB #30 INJ T5 trans 3.73 gears 150 shot NOS

Re: Going from return less fuel to return style

Unread post by MBSVT »

Ok then, that makes sense No need for the FPDM. But I will need to install a FRPS... Correct?
Thank you for your help...
MB
decipha
Posts: 4950
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Going from return less fuel to return style

Unread post by decipha »

fpdm is the pump voltage controller

frps is the rail pressure sensor

two different entities.

yes you want a frps if you have the option
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