LJ, have you tried to use your hanger with a Bosch 044?

 

We haven't, I'm sure there is room for 1 pump. You can fit two side by side if you drop them in one at a time. That is how our EG kit is designed. As far as securing it to the hanger and not let them flap around, I'm not sure if it is possible.

 

I was thinking about testing it using a single 044, if I had to make some small modifications that would be okay.

Really for many of the cars we need more pressure not flow. Take for a example a car wanting 500-550 WHP on ID1000's the 75PSI Walbro cutout really hinders the flow and won't allow you to break about 500WHP. There are a huge number of cars with a single Walbro and ID1000's and many are looking to move to E85. If one was able to purchase a single drop in 044 then they would not have to get new injectors b/c the pressure capabilities and flow is much greater with the 044.

Based on a 15PSI pressure drop which I calculated for the stock feed line the maximum pressure before hitting the bleed on the pump is 60PSI at the injectors or 1180cc/min. However if you were able to raise the base pressure so that 90PSI was reached at the rail at full boost the injectors would be capable of 1435cc/mm. Based on a good flowing setup making 500WHP with the injectors maxed and doing some simple math this would allow up to 600WHP, or 650WHP at 100PSI base pressure, injector limited.

So the point I am trying to make here is that their is both cost and time savings for those that originally built for pump gas and want move to E85. Pump and hanger cost is the same as a dual but now you do not need injectors or a complete retune for pump gas if going back and forth between the two fuels.

Thanks Again for you input.

 

I would be willing to make a kit if there was enough interest. Problem with this is guys who dont want to fork up the price of 044 and just add a walbro instead. I'm open to suggestions though. I have found that modifying the walbro really helps out. Ive never had one fail due to the mod. LJ

 

I was actually thinking about trying that but was weary. If we were to be able to get 90PSI out of the pumps even at a lower flow rate the dual pump option would be back in the loop.

 

On our car with both modified pumps, it made 802hp with a base pressure of 45psi running 33 lbs of boost. The Duty cycle on the 1000cc were 80% and 60% on the 2150cc.

 

Jeez. Sometimes I feel fairly decent about my car knowledge, and other times, I realize that I have A LOT of work to do.

Where is the best place to do research on the limits of the returnless system the DBW AP2, without having to convert over to the older type?

Sorry for the thread jack. The kit looks really good, sounds like this might be something I'll need eventually when I go FI.

 

Stock system with ID1000 and walbro will get you 480whp or 500whp on a higher reading dyno.


Back on topic.
I am interested in the 044 hanger option. However I would prefer to not convert to a return system. Would pushing 90psi without a return be dangerous?

 

You will have to set up a return system if you put in an O44.

 

Great Details

At that duty cycle that has to be on pump or race gas, on E85 the ID1000's would be short by 15-20% I believe, however that still should be in the 600+WHP range.