Nitro Dave/NXRicky
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From: Wichita Falls, TX
The lean spike really is not caused by nitrous getting to hole faster. It is casued by the fuel injectors not having fuel once a solenoid is opened. Now this should only happen on NON-stand alone systems. We see it a bunch even on single nozzle stuff. It takes time to fill the rail and repressure the system. I have talk with FJO on the delay, and it is on the board to be done. But it will only a bit of adjustment not complete controll at this time.
Ricky
Ricky
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Ricky,
If it's as you say, then a delay (or even a lead line) won't help me. It'll just lean out earlier, before the nitrous flows. How do you suggest I fix this? I have a healthy pump and good sized lines. The Weldon feeds a single -8 that Y's to two -6's. Each -6 feeds 3 injectors and one fuel noid. The fuel noids are located downstream of the fuel injectors.
John
If it's as you say, then a delay (or even a lead line) won't help me. It'll just lean out earlier, before the nitrous flows. How do you suggest I fix this? I have a healthy pump and good sized lines. The Weldon feeds a single -8 that Y's to two -6's. Each -6 feeds 3 injectors and one fuel noid. The fuel noids are located downstream of the fuel injectors.
John
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From: Wichita Falls, TX
Just how bad off a delay is it? Something you feel, or see on a dyno graph?
A bog can be caused by several things, most common is fuel lean.
One thing to look at is all the fittings in the fuel side of your nitrous system. Any hard 90' will slow thing down and cause turbulance.
Ricky
A bog can be caused by several things, most common is fuel lean.
One thing to look at is all the fittings in the fuel side of your nitrous system. Any hard 90' will slow thing down and cause turbulance.
Ricky
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Ricky,
The thing that is bothering me is a lean spike, not a delay. You said in your previous post that the lean is caused by the injectors starving when the fuel noid opens and starts to fill the rail. How can I eliminate this? It shows up on my scans at the precise time the Maximizer turns the juice on for the first time in the run. It lasts about .2 seconds.
Thanks,
John
The thing that is bothering me is a lean spike, not a delay. You said in your previous post that the lean is caused by the injectors starving when the fuel noid opens and starts to fill the rail. How can I eliminate this? It shows up on my scans at the precise time the Maximizer turns the juice on for the first time in the run. It lasts about .2 seconds.
Thanks,
John
Were you are seeing it on the other cars is when the pressure regulator is to far from the rails. Correct. With a good pump and regulator close enough to the rails there should not be enough fuel pulled from the injectors to create a lean spike. Not with a smallish 200 or so shot anyhow.
It detects gearshifts from RPM triggers. It does not know what gear it is in other then that. Everytime you hit it it thinks its starting out in 1st gear. If you want it to come on in 2nd just set it up so its at 0% thru first.
Joined: May 2002
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From: windsor, ont. canada - Home of the fastest LT1 6spd.
Originally Posted by hellbents10
I have the rails also. I figured I may end up running into a lean spike. So I do everything to prevent lean spikes. I have the fuel oid mounted directly to the rail and the I have a 3ft -4 line from the n20 noid to the rail. This gives the fuel a head start. Gotta figure 9psi vs. 1050 which is going to win the race to the cylinder. I also purge the fuel after a long time not spraying. I have a fitting right before the fuel noid to do this. I run everything of the a1000 pump with two regulators, one for spray and one for the carb.
I hope they offer a fuel noid offset for next season. i want to use one regulator insted of two, cause I want one boost refrenced regulator not two. I will be blowin thru the CSU 750 and sprayin too.
BTW, I get all getty like a school girl when I get to see Taner's car run. Cannot wait till m10.
I hope they offer a fuel noid offset for next season. i want to use one regulator insted of two, cause I want one boost refrenced regulator not two. I will be blowin thru the CSU 750 and sprayin too.
BTW, I get all getty like a school girl when I get to see Taner's car run. Cannot wait till m10.
thanks!
i too look forward to m10 as well 
rick,
the link didn't work?
also not the noid i am concerned with it is what happens to the motor if the noid fails!!! solenoids are cheap to replace, motors aren't to rebuild, that is why i don't use a progressive controller.
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With a good pump and regulator close enough to the rails there should not be enough fuel pulled from the injectors to create a lean spike. Not with a smallish 200 or so shot anyhow.
John