Seth ZX12r UK
Expert Class
Posts: 238
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posted September 20, 2007 05:12 AM
Nitrous fuelling
Am I right that a 40-50 nitrous shot can be used on a 12r without having to retard the ignition with fuelling run at 12.1 from 80-90% throttle on the PC3 with the nitrous triggered by a throttle mounted micro switch?
Whats the formula for adding more fuel with each rise in each nitrous shot?
ie. 40-50 shot=1 point richer 50-60 shot (x) points richer 60-70 shot (x) points richer etc?
cheers
   
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Texas12R
Zone Head
Posts: 545
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posted September 20, 2007 02:08 PM
 Edited By: Texas12R on 20 Sep 2007 15:14
ryan schnitz
Novice Class
Posts: 35
posted September 06, 2007 05:46 AM ( ON Dragbike Zone)
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40-50 is fine with stock plugs, stock motor, and stock timing with 93 pump or better fuel. Make sure you add fuel via the power commander.
Ry--
That would be Ryan Schnitz of Schnitz Racing
Ive heard that you just bump up the fuel two bars on the high end via the button on the power commander.
I dont know any formula but Im sure one of our more knowledgeable collegues will
have that.
I also recall 60 dry as marginal and would only attempt that with a custom map developed
specifically for your bike under the supervision of a seasoned tuner on a dyno.
Just my two pence 
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VincentHill
Needs a life
Posts: 6520
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posted September 21, 2007 06:42 AM
quote:
Am I right that a 40-50 nitrous shot can be used on a 12r without having to retard the ignition with fuelling run at 12.1 from 80-90% throttle on the PC3 with the nitrous triggered by a throttle mounted micro switch?
Whats the formula for adding more fuel with each rise in each nitrous shot?
ie. 40-50 shot=1 point richer 50-60 shot (x) points richer 60-70 shot (x) points richer etc?
cheers
30 to 40 shot 1 bar and 50 to 60 shot 2 bars BUT Like me, put it on the dyno with a Sniffer just to make sure you are in the 12 to 1 A/F Range
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Made History @ Daytona and still one fast old man!!
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TRNorBRN6001
Needs a job
Posts: 2021
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posted September 21, 2007 09:50 AM
I'm with them, be safe and put it on a dyno. Run some good fuel with higher Octane,
as it will only knock a couple of ponies off. You may want to try a 20 shot first if you
have never ran nos on your bike with a full throttle switch, especially in lower gears.
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TFA 200MPH CLUB MEMBER!
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jus1975
Expert Class
Posts: 402
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posted October 08, 2007 04:49 PM
What is the perfect AF ratio. I thought it was 14.7. And is the lower the first number the richer the mix is or is that backwards.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted October 09, 2007 05:09 AM
I think that might be a touch lean. Some people like 13-12.8 / 1 on just motor. With Juice you may want to be a little richer. A Dyno may work nice to help find a good set up for you.
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TFA 200MPH CLUB MEMBER!
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