Using bosch 044 inline. Do I have to disconnect an remove factory pump?
 

Kinda thought that an inline pump worked in series with the stocker. Recently read smthing that says to remove th stock pump.

Is this true?

only if your retrofitting it into the stock pump location. if your actually planning on runing it inline outside the tank in series with the stocker no.

z

Leave the stock in-tank pump in place if you are running the 044 inline. I'm running an 044 inline with a supra pump in tank and it works very well.

Do you use a surge tank,or just feed the supra into the bosch?
I am also inatalling the supra pump in tank, with the bosch in line.

I have a walbro in-tank with a bosch 044 in-line, with no swirl pot, and seems to work fine. Haven't had a chance to run it up yet though. I read from Bosch that you can get higher fuel flow with the two in-line then you can with just the 044 fed from a sump/swirl pot.

In my previous car I ran a 255 in-tank with an inline 044, worked beautifully as well as improves the performance of the 044.

If you wanna have a sample of what its going to sound like, I put a video up on youtube of my setup, you'll see the pump around the 1:45 mark

http://www.youtube.com/watch?v=xodYkAtI4zs

yeah, I solid mounted mine near the rear diff on my 7, and you can literally feel it through the whole chassis. It's a loud mother.

EZFD, how much Hp you getting from the supra/bosch setup? Do you think it will support 500hp?

It will easily support 500hp, an 044 alone would be able to do it, let alone with a helper

totally off subject but very clean gsx...im a mitsu fan also...um i have 2 in my fleet haha.
-wes

Never knew you could do that. Might add one when I run out of fuel haha.

thewird

I'll post up dyno results soon, i get tuned next Thursday

yes you can to boost the pressure but you wont get as much volume as doing a parallel setup FYI. its not much but there is a difference obviously being your only feeding one line versus 2 lines which would yield more flow.

z

Well according to T1 you're wrong. I'll take their word for it since they seem to know their shit as far as fuel injection goes:

"This Bosch pump is a great addition to any fuel system. It can be used on it's own for about 650-700whp in a turbocharged application. It can be used inline as a 'booster pump' to increase the volume and pressure capability of a smaller single pump system. This pump inline with a walbro in tank is good for over 750whp with the Injector Dynamics 1000cc injectors. Two of these pumps run in parallel with a fuel sump are good for over 800whp on 4 ID 1000cc injectors and over 1100whp on 6 ID 1000's."

http://www.t1racedevelopment.com/ind...hk=1&Itemid=72

Now, obviously dual Bosch's in parallel will flow more than a walbro/bosch in-line, but the reason for routing it this way is to make it much easier to install. (No swirl pot, no welded sump, etc.)

so just out of curiosity did you read what you posted? this is exactly what i posted.

the series setup as they state is only good for 750 the parallel is good for 800? the extra volume from the parallel gives enough fuel for more HP. even though you can get higher pressure from the series it still wont equal the flow of the parallel IE less HP.

but yes as you stated the series is just for ease and cheapness of install for that extra fuel without having to go to a full blown parallel system.

z

Regardless of how it's setup, the series will provide more than enough flow for 500hp+...and I think everyone has more than answered his question :)

I did a bucket test with pumps in series vs parallel....parallel would be the best choice, which I'd prefer if I were to ever go E85 for volume purposes...

You guys think a supra + bosch 044 inline would be enough to support 650cc/ID2000cc injector combo @ 44 psi base pressure maxed out?

thewird

Sorry you're right, I didn't read your post properly. But personally for simplicity and cost, I'd rather go 1 bosch in-line with 1 in-tank pump, also because I had the walbro previously. And there isn't that big a difference in flow rating according to T1.

I imagine it would, but if it isn't enough, you'll need a second bosch anyways, so you'll already have the one. Being how easy it is to plumb one in-line, it's definitely worth a try. Considering the small difference between 1 in-tank + 1 bosch in-line and two bosch's in parallel in flow, I'd rather stick to 1 in-tank.

And, btw I have the same turbo as you with ID1000/1680 injectors, and I expect it to be enough.

Cool beans then. Just got to get the parts together then.

thewird

I use that Aeromotive 1000, with 1/2" fuel lines, seems to be ok ,
my thoghts are about no swirl pot or resivior tank.

you guys think there ever would be a situation where the intank pump wouldn't be able to supply the inline pump?

Yea if the intank pump dies ;)

yes same time when just an intank pump would loose pressure. low fuel level hard extended turn or acceleration causing fuel to slosh away from the pickup. the inline setup is only to get you that extra pressure for the HP cheaper than doing a sumptank setup which will allow you to go to vitrually an empty tank and still have good pressure off the surge tanks pressure pump even though the lifter pump is dry although only till the surge tank goes dry too

z

so keeping the stock pump will only work and be reliable if u had some type of sump setup in the stock tank.....and then if u had to "sump" the stock tank, whats the use of running the bosch in series with the stocker???

u might as well run the bosch intank, and forget about the stocker....(if u upgrade the baffling system in the stock tank)

maybe you should just state what your looking for as i think your confused on the point or differences between a series and sump fed systems.

series will give you more flow/pressure than a single same pump on the cheap. vs going parallel or sump that gets into all kinds of extra brackets fittings tanks.

if all your looking for is more reliability for fear of fuel starvation just do an intank sump type setup. i think someone sells a retrofit to the stock baffles on here.

IF you need more flow/pressure as the single ran out go series or parallel but there is no added fuel starvation benefits from this. its still being fed from the stock style pump pickup(s).

IF you need more fuel AND want a bulle proof fuel starvation system. you need to determine the pump or pumps that will meet your requirements and create a sump tank system or swirl pot as some call it. with the intank pump feeding the sump/swirl tank at 0 pressure and then your pressure pump/pumps feeding off the bottom of the sump/swirl tank in series or parallel pending on your choices, requirements and personal choice.

hope that helps

z