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Bosch 044 External Pump Setup.

GTR-Ben

By GTR-Ben,
in Engines & Forced Induction

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GTR-Ben Proficient

GTR-Ben

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Hey guys, I have mounted my 044 under the car with a surge tank (hate the smell and noise inside the car) and I have got a fuel pump control module from a GTR to drop the voltage to the pump at idle.

I plan on using the lower idle 7V supply when my AFM output is under 2.5V, will this be ok for the Bosch pump? I guessed since it was ok for the stock GTR pump to run at this voltage then the 044 should to?

The extra current won't heat it up if there is any?

Thanks Sydneykid for the J Car voltage switch idea :thumbsup: using this to switch to earth and supply battery voltage since the Powerfc does not have outputs to the control module i'm told.

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https://www.sau.com.au/forums/topic/219777-bosch-044-external-pump-setup/
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GTR-Ben Proficient

GTR-Ben

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Cheers :D

Yep RB30 in a Silvia.

Have a GTR lift pump in the tank. Overkill but I already had it in there..

The External pump was the one that stopped though

Hope the Bosch Pump can run at a lower voltage.. took a bit of work setting it up.

Edited by GTR-Ben
GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Are you switching the pump to a dirty earth, or its supply voltage (with a few resistors) ??

Can you quickly feed it max juice to see if its a voltage thing, or something else? Not a one way valve hooked up in the wrong orientation? lol.

I thought they'd heat up as well...

Silvia with RB30 single... your crazy btw hahaha.

Edited by GeeTR
GTR-Ben Proficient

GTR-Ben

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It is a volt thing. I can change the settings on my voltage switch and ground it to supply battery voltage and it goes fine.

So the wiring is all working, just not enough voltage.

Its regulated via a stock GTR voltage control module. These control 7, 9 and battery voltage via ground.

As for increased current etc etc. It didn't seem hot even when it wasn't pumping but on.. I am no expert with the I=V/R and power output etc..

I guess because the pump is going slower it requires less amps.. so it won't get hot?

If it was a problem, why would this system come out factory in a GTR? :D

Edited by GTR-Ben
GTR-Ben Proficient

GTR-Ben

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Read the voltage/fuel pump thread... the link is in the Forced Induction Guide :)

Should have just gotten decent fuel lines (stops the smell in cabin). I've seen them and they are tops, look cool too!

I have probably read every thread on this board mate :)

I like the tank under the car, would not have it any other way.. and I wanted a varying voltage signal to my external pump so it's not pumping 800hp worth of fuel between the rail and surge tank on idle.. and for the noise.

Im confident at the 9V setting on the module the pump will work, remembering as soon as the car fires up and vacuum is applied to the regulator pressure is released as well as the battery will supply more voltage once the alternator starts working. The 7v feed may yet even work with the car running.. I ran out of time testing it in the weekend :)

STR8E180 Proficient

STR8E180

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Posted (edited)
Yep RB30 in a Silvia.

i was gonna say!! where the hell did u find room for it

i tried doing that kinda setup in my R32 GTR and i couldnt find any room wat so ever under the car to do some thing like that

RB30 in a silvia??? dam!! any more details on the caR???

Edited by STR8E180
GTR-Ben Proficient

GTR-Ben

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wow thats some series respect!!!

did u upgrade the suspension for the heavy front end???

also wat turbo are u using?":?

i still got all the hicas junk under my GTR i just locked it up with a lock bar

Thanks mate.

It has some aftermarket dampers.. nothing amazing but no problems with weight.

Ballbearing Garret turbo. rated for 600HP or so. very responsive..

Remove all that Hicas junk then! bit of weight with all that. ;)

Stagea Denmark Collaborator

Stagea Denmark

Posted
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Cheers :P

Yep RB30 in a Silvia.

Have a GTR lift pump in the tank. Overkill but I already had it in there..

The External pump was the one that stopped though

Hope the Bosch Pump can run at a lower voltage.. took a bit of work setting it up.

I have the same pump and setup in my Stagea, and have the pump at the same place, i run with 12v, i am pretty sure, you have to run it with 12v, but at this place, it is very noisy.

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