AEM Wideband Lambda
Discussion
db484bhpv8 said:
Certainly food for thought 
Just to clarify how the nitrous systems work (i will keep this simple as i am not such a fan of typing as you).
Extra fuel is added independantly of the injection system and fuel rail. A t piece in the fuel line feeds the nitrous fuel solenoids and plumbing meets at 'crossfire' injectors. Ie fuel at 3 bar exits the injector with nitrous blasting through at 950 psi. The object of these injectors is to mix and atomize the fuel and nitrous liquid.
I run 2 seperate systems. On 1 i have 2 crossfires in the plenum flare aiming toward the roof of the plenum front and back. Another is simply a single injector in the elbow just ahead of the throttle.
I believe that at launch on the stip and with acceleration forces the lower pressure heavy fuel is being pulled back in the plenum and therefore allowing the front pots to run weak. My wideband will only show the average result so will look fine from that.
The solution would be a decent direct port system with an injector for each pot in the trumpet base. This is something i need to do i guess. I need to use the NOS injectors as these are jetted individually and therefore will ensure even distribution. When trying to go direct port with the WON systems that are jetted from the solenoid the same problem occurs with fuel distribution getting pulled toward the rear.
To add... i run a Bosch 044 with a 3 bar weber alpha. There is a fuel pressure switch in the system that will signal the nitrous system to cut if the pressure drops below a set level.
Cool, you're teaching me about Nos and I'm loving it Just to clarify how the nitrous systems work (i will keep this simple as i am not such a fan of typing as you).
Extra fuel is added independantly of the injection system and fuel rail. A t piece in the fuel line feeds the nitrous fuel solenoids and plumbing meets at 'crossfire' injectors. Ie fuel at 3 bar exits the injector with nitrous blasting through at 950 psi. The object of these injectors is to mix and atomize the fuel and nitrous liquid.
I run 2 seperate systems. On 1 i have 2 crossfires in the plenum flare aiming toward the roof of the plenum front and back. Another is simply a single injector in the elbow just ahead of the throttle.
I believe that at launch on the stip and with acceleration forces the lower pressure heavy fuel is being pulled back in the plenum and therefore allowing the front pots to run weak. My wideband will only show the average result so will look fine from that.
The solution would be a decent direct port system with an injector for each pot in the trumpet base. This is something i need to do i guess. I need to use the NOS injectors as these are jetted individually and therefore will ensure even distribution. When trying to go direct port with the WON systems that are jetted from the solenoid the same problem occurs with fuel distribution getting pulled toward the rear.
To add... i run a Bosch 044 with a 3 bar weber alpha. There is a fuel pressure switch in the system that will signal the nitrous system to cut if the pressure drops below a set level.
I didn't realize there was a separate fuel feed and the Nos & fuel got atomized together at the crossfire injectors, makes perfect sense now I think about it.
It's an interesting system and clearly you have good knowledge of both how it works and where the problem is.
You even seem to know whats needed to fix it, a decent direct port system with an injector for each pot in the trumpet base certainly sounds like the answer.
Like all these things it's probably been done a thousand times before over the pond, and the Yanks have come up with all the answers already.
I said you need to break a few eggs to make an omelet, but the reality is you could let the Yanks do all that then copy what they do to keep your pistons safe.
Cheaper that way.. so "God Bless America".
http://www.youtube.com/watch?v=rEJo7x9y3D4
Sorry about that link by the way
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