looking for all big turbo ms6's

[Haltech]

Who said high pressure is only for return less?

The Focus SVT and GT40 are return less systems, just like the Speed6. The pump only runs as it's needed, when it's needed.


The Walbro pump ran in a return less system actually runs at a lesser output because of the signal being sent to it. The Focus SVT pump flows more fuel in it's designed system.


If you put on a pump designed for fuel return systems, on a return less system, the pump continues running at it max output and will end up failing prematurely.

.



Pumps:----(13V)40psi--60psi--80psi-(BAP 17V)40psi--60psi-80psi
5.0 & SN95------98----73----46--------------137----100--63
4.6 2V ('99+)----158---115---65--------------264----201--152
4.6 4V ('99-'02)--154---131--100-------------211----189---162
'03/'04 Cobra(x2)-167---145--119-------------236----215--189
Lightning---------149---127--95--------------204----181--158
Focus Zetec------147---103--54--------------230----190--160
SVT Focus-------217---185---143-------------302----278--244

You said it was high pressure for a returnless system when you stated the setup for a SVT focus.

Now, you may want to recant your last statement about a high pressure pump being used on a non returnless system. I have outlined that ive been running SVT Focus pumps ( 2 to be exact, intank and split with a Y ) for 3 years in my Lightning. I have monitored the output on my truck via autotap software and my pumps are not running 100% all the time, causing them to burn out. The duty cycle is increased via the ECU when needed, even on a return fuel system. I went with these pumps to increase the volume via pressure. Maybe this is different on other makes, but as far as Fords go, this is how it works.

As far as your chart goes, the Lightning and Cobras use the same dual fuel system... Why the pressure in these charts are different makes no sense. The lightning uses larger injectors and the entire system flows more fuel than a Cobra. Are these Kenne Bell boost-a-pump figures?

 

[Chris-BE]

You said it was high pressure for a returnless system when you stated the setup for a SVT focus.

Now, you may want to recant your last statement about a high pressure pump being used on a non returnless system. I have outlined that ive been running SVT Focus pumps ( 2 to be exact, intank and split with a Y ) for 3 years in my Lightning. I have monitored the output on my truck via autotap software and my pumps are not running 100% all the time, causing them to burn out. The duty cycle is increased via the ECU when needed, even on a return fuel system. I went with these pumps to increase the volume via pressure. Maybe this is different on other makes, but as far as Fords go, this is how it works.

As far as your chart goes, the Lightning and Cobras use the same dual fuel system... Why the pressure in these charts are different makes no sense. The lightning uses larger injectors and the entire system flows more fuel than a Cobra. Are these Kenne Bell boost-a-pump figures?

WTF are you talking about. I said nothing about high pressure not being used on returnless systems. My point is about using fuel pumps designed for RETURN systems on returnless systems. Variable voltage systems aren't designed for Walbro 255 or most any other return fuel systems. When you run a Walbro 255 on a variable voltage fuel system, it runs all the time at a reduced rate. Read about it, if I wasn't clear enough. Your FSVT fuel pumps are variable voltage pumps, doing as they are designed to do.

The Speed6 is an on demand system.

I think were on the same page, but each other has the other confused.

Those numbers are from Muscle Mustang and Fast Fords, MM-FF.

 

[Haltech]

WTF are you talking about. I said nothing about high pressure not being used on returnless systems. My point is about using fuel pumps designed for RETURN systems on returnless systems. Variable voltage systems aren't designed for Walbro 255 or most any other return fuel systems. When you run a Walbro 255 on a variable voltage fuel system, it runs all the time at a reduced rate. Read about it, if I wasn't clear enough. Your FSVT fuel pumps are variable voltage pumps, doing as they are designed to do.

The Speed6 is an on demand system.

I think were on the same page, but each other has the other confused.

Those numbers are from Muscle Mustang and Fast Fords, MM-FF.

Gotcha, i misread the post a few back.

Anyhow, whos ready to swap out their pump? Theres a couple of you who have pegged your fuel system correct?

 

[Chris-BE]

I actually had planned on testing the stock pump and getting the flow rate.

I also thought about just going and buying a Focus SVT pump and seeing what if it fits.

 

[Haltech]

I actually had planned on testing the stock pump and getting the flow rate.

I also thought about just going and buying a Focus SVT pump and seeing what if it fits.

It should fit.. Where you run into probs like requires a tiny biy of fab work is the end, where the sock sits at the bottom of the assembly. Theres usually like a rubber thinger that attached to the pump housing that a clamp attaches to. Depending on the length of our pump compared to the Focus pump, slight modding by cutting away some of that rubber may be needed. Wont know until someone does it.

 

[MS6mike]

all of you guys knows a lot! mad props! please help this comunity fix this problem! i need a better fuel system so i can go to the 11's!

 

[Haltech]

all of you guys knows a lot! mad props! please help this comunity fix this problem! i need a better fuel system so i can go to the 11's!

Ill be there right beside you!(2thumbs)

 

[BoostedSpd6]

ok guys sorry it took so long getting back to u guys on what i did and yes its a walbro 255 high. and yes just like the SVT didnt think u guys would catch it...but its fricken awesome man it solves every problem with fuel especially if ur going with an ATP turbo kit which i plan on doing but even with the stock turbo im getting great A/F with boost at 17 and the turbo isnt doing bad at all cuz of my 3 inch custom turbo back and 3.5 EST top mount...and no fuel cut as of yet... i will be posting a how to on this soon when i get the time to sit down.

It should fit.. Where you run into probs like requires a tiny biy of fab work is the end, where the sock sits at the bottom of the assembly. Theres usually like a rubber thinger that attached to the pump housing that a clamp attaches to. Depending on the length of our pump compared to the Focus pump, slight modding by cutting away some of that rubber may be needed. Wont know until someone does it.

that the custom work i was talking about. i had to cut away alittle but of the rubber to make it fit but in the end it was nice. and it works great..and it fits rlly nice guys..BUY BUY BUY.

 

[mrlilguy157]

??????

17psi on the stock turbo won't induce fuel cut. you can keep stock fuel pump and run upto 20psi with the ATP boost cut killer module, like i do, with very very rich A/F ratios even then.

i'm so confused...... ?????????

 

[Haltech]

Damn its really to bad he had no way of datalogging his problem, than tossing up the tables to look at before and after his swap. I would like to see the high and low fuel trim tables, injector duty cycles and of course, % on pump output.

Anyhow, i still think im going to do the swap. Were you able to get into the fuel tank from the trunk?

 

[MS6mike]

ok guys sorry it took so long getting back to u guys on what i did and yes its a walbro 255 high. and yes just like the SVT didnt think u guys would catch it...but its fricken awesome man it solves every problem with fuel especially if ur going with an ATP turbo kit which i plan on doing but even with the stock turbo im getting great A/F with boost at 17 and the turbo isnt doing bad at all cuz of my 3 inch custom turbo back and 3.5 EST top mount...and no fuel cut as of yet... i will be posting a how to on this soon when i get the time to sit down.




that the custom work i was talking about. i had to cut away alittle but of the rubber to make it fit but in the end it was nice. and it works great..and it fits rlly nice guys..BUY BUY BUY.

please bro! i will be doing this as soon as you write that up!(bow)

 

[BoostedSpd6]

please bro! i will be doing this as soon as you write that up!(bow)

well mike i think ill be writing it up sometime this week..in the meantime have u ordered the pump yet.. if not do that now and then by the time it comes in the write up should definetly be done...its fairly easy u did the front mount kit and its not as hard as that... and yeah i slipped on the logging of everything thats different between the two pumps i was just so excited that it fit that i just did it without even thinking of seeing the difference in everything..sorry guys... maybe one of u who hasent done this yet can do it and post up what numbers u got.

 

[MS6mike]

whats the part number for the part? sorry i am not a expert and wat to make sure i get the right one!

 

[chriscecc914]

are you guys talking about the ford pumps or the walbro 255? I have seen the walbro fail on returnless style fuel systems. On the other hand o had a svt focus pump in my 405whp mustang and it supported fuel perfectly. The GT40 pump supports even more power.

 

[BoostedSpd6]

whats the part number for the part? sorry i am not a expert and wat to make sure i get the right one!

part number is Walbro GSS341 255lph high pressure.. and to date even though its been only a few days i havent had a problem with it... but we will see when i go to the track in 2 months how it does.. hopefully i dont have problems with it..

 

[forrestang]

Definetely need some more info. My fuel system is pegged I believe?

I need more fuel and 'Powa!'

FMIC is on order and should be here soon. I've data logged everything with my current stock fueling setup, so logging everything AFTER a new fuel pump should be beneficial for everyone.

 

[sbspeed]

ok guys sorry it took so long getting back to u guys on what i did and yes its a walbro 255 high. and yes just like the SVT didnt think u guys would catch it...but its fricken awesome man it solves every problem with fuel especially if ur going with an ATP turbo kit which i plan on doing but even with the stock turbo im getting great A/F with boost at 17 and the turbo isnt doing bad at all cuz of my 3 inch custom turbo back and 3.5 EST top mount...and no fuel cut as of yet... i will be posting a how to on this soon when i get the time to sit down.




that the custom work i was talking about. i had to cut away alittle but of the rubber to make it fit but in the end it was nice. and it works great..and it fits rlly nice guys..BUY BUY BUY.

This is on the stock turbo - nobody has had problems with boosting to 17 on the stock turbo - so what does adding a Walbro GSS341 prove?

It's the stock turbo.

 

[mrlilguy157]

This is on the stock turbo - nobody has had problems with boosting to 17 on the stock turbo - so what does adding a Walbro GSS341 prove?

It's the stock turbo.

exactly and thank you for backing me up. i'm at 21psi with very rich A/F

 

[MS6mike]

because, the fuel system is not good to make more than about 315whp,no matter if its rich lean W/E. I am going to be hitting atleast 400whp. thats why me for example im loking into the pump. side issue when my car is low on gas it starts surging, i tried everything to see what was the problem. there is only 2 things that could be! the turbo, or fuel system. Thats why i am upgrading both. i am in around the same powers as the people runing the ATP3071r turbo kit TBE, and ETS top mount I/C. if i fine tune my car i am sure ill be in the 315whp category! thats why it is important to have the fuel system up to date whit the mods. Just because you are boosting 21 psi rich, it dosen't mean you have 315whp, thus making your stock fuel system works!

 

[jbspeed6]

because, the fuel system is not good to make more than about 315whp,no matter if its rich lean W/E. I am going to be hitting atleast 400whp. thats why me for example im loking into the pump. side issue when my car is low on gas it starts surging, i tried everything to see what was the problem. there is only 2 things that could be! the turbo, or fuel system. Thats why i am upgrading both. i am in around the same powers as the people runing the ATP3071r turbo kit TBE, and ETS top mount I/C. if i fine tune my car i am sure ill be in the 315whp category! thats why it is important to have the fuel system up to date whit the mods. Just because you are boosting 21 psi rich, it dosen't mean you have 315whp, thus making your stock fuel system works!

The only reason why Forrestang and ATL, the only two people in the 300+ whp club right now, are only running around 315 wheel is because they ran out of fuel. Had they been able to turn up the boost or timing then I am sure they would have, however they both said that they leaned out at 310 whp. I am not sure what you mean by saying "the fuel system is not good to make more than about 315 whp, no matter if its rich lean W/E". It does matter, if you are still running pig rich at 315 whp then you still have fuel to work with, which was not the case with the 300whp people.