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Old 10-28-2005, 01:54 PM   #1
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NX 2 stage system

I have been thinking of converting my EFI stage 1 to a 2 stage system for the SVT. I have been running a 50-75 shot but when I can smoke the tires from a 20 mph roll in 1st gear on a 50 shot, traction can be a problem. I was thinking 25 shot for stage 1, 75 shot for stage 2. This will be after I get a good tune of course. What are your opinions.

http://www.nitrousexpress.com/Catalo.../dualstage.pdf


Or convert to direct port. . .


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Old 10-28-2005, 03:35 PM   #2
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Go 35 shot first ...you can get into it EARLY...then do another 35 or maybe a 50 if the tune is right for that big a hit.
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Old 10-28-2005, 03:42 PM   #3
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Quote:
Originally posted by viney266
Go 35 shot first ...you can get into it EARLY...then do another 35 or maybe a 50 if the tune is right for that big a hit.
I have single nozzle set at 75 shot right now, What would have to be special about the tune to do the stage 2 safely?? Increase the pressure in the rail to compensate for the extra fuel going to the second fuel solenoid, retard the timing a couple degrees.
A stg 1-35shot + stg 2 50 shot 10 hp Cant be that big of a difference from what I'm running, its just spraying through 2 separate nozzles and the delivery wouldn't be as violent.
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Old 10-28-2005, 09:06 PM   #4
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intresting Idea, I may try that down the road also, after I finish this winters build up of the trans and bring the boost closer to 14PSI
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Old 10-29-2005, 12:01 AM   #5
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Have you considered a progressive controller? You can set it to deliver as little as 5% at launch and ramp up to 100% at any time or rpm rate you wish. It's expensive but so is a two stage. Just a thought. It's a LOT safer and easier on engine/drive parts as well.

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