Running lean with standalone fuel cell
Running lean with standalone fuel cell We are running 2 stages 125 + 300. With the first stage A/F is nice 11:5-12:1. As soon as the 300 hits AF dives to 14:6-8. We had the same issue 3 weeks ago. We couldn't turn the fuel pressure past 52psi on the standalone, we changed the fuel pump in the cell to a 255hp and can get pressure to 60psi no problem. With pressure at 60psi the car still goes lean just like it did with the old pump. The cell is in the back of the car with -6 ran to the front where the regulator is. Out of the regulator comes one -4 for the 125 first stage, -6 also comes out of the other port and Y to two -4 for the direct port. Any help or ideas?
On The Tree
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From: Daytona Beach/chicago/south beach
make sure you have enough volume, pressure is one thing but volume is another.. and id def put a return line on it if you dont have one.. did u ever think of flowing the system and seeing if flow is ok? we had a problem once like that, pressure was regulated at closed system and then we did a flow test and noticed the pressure was totally off.. big difference setting the pressure at 60 at closed line then at a opened with both kits on..
It has a return line now. We have rerouted the nitrous plumbing to get rid of all 90 fittings beside 2. We are also thinking about running 2 feed lines and regulators. The second kit is a 4 noid direct port. I think its a volume issue. The pill sizing we are running is based off a 40psi and we are running 60psi. Also nitrous pressure on these runs was only 875-900.
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On The Tree
iTrader: (2)
Joined: Dec 2007
Posts: 117
Likes: 0
From: Daytona Beach/chicago/south beach
It has a return line now. We have rerouted the nitrous plumbing to get rid of all 90 fittings beside 2. We are also thinking about running 2 feed lines and regulators. The second kit is a 4 noid direct port. I think its a volume issue. The pill sizing we are running is based off a 40psi and we are running 60psi. Also nitrous pressure on these runs was only 875-900.
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The system has always had a return. The cell has a 255 intank with a 6an feed to a aeromotive compact efi regulator and a 6an return. One of the outlet ports of the regulator has a 6an out and a 6an-2 4an Y feeding the 2 directport solenoids. One of the other ports from the reg has a single 4 running to the single fogger.
The only thing that makes this different than any other fuel system I have ever run is that it isn't regulated on the return side. The only way I can see to do this would be to run the feed from the pump to the inlet side of all the fuel solenoids and run the bypass port from all 3 fuel solenoids through the regulator then return.
That is the only way I can think to make it more like a traditional fuel system. Using the solenoids themselves like the fuelrails on a motor.
But looking at it the way we have it now, being regulated before the source, it's more like a static (returnless) system.
We have a few ideas we will be trying today, but if anyone has any ideas throw them out there.
The only thing that makes this different than any other fuel system I have ever run is that it isn't regulated on the return side. The only way I can see to do this would be to run the feed from the pump to the inlet side of all the fuel solenoids and run the bypass port from all 3 fuel solenoids through the regulator then return.
That is the only way I can think to make it more like a traditional fuel system. Using the solenoids themselves like the fuelrails on a motor.
But looking at it the way we have it now, being regulated before the source, it's more like a static (returnless) system.
We have a few ideas we will be trying today, but if anyone has any ideas throw them out there.