indynic
Expert Class
Lil Show, Lil Go
Posts: 258
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posted September 24, 2011 06:28 AM
Fuel Kill vs. Ignition Kill ??
My Mods:
All the bolt-ons (exhaust, PC3, Dynotuned, etc)
40 dry shot (Putting it on a Schnitz TPRS-002 when I install the Airshifter)
Slammed, Mac Pro-Street Swingarm
66"
17/45 Gearing
I see on MPS's website that they advertise that their "Fuel Killbox is good specifically for Dry Nitrous Applications." I can't wrap my head around this statement.
If I am running a window switch like the TPRS, what if for some reason I accidentally short shift in the nitrous window? It would kill the fuel and I would run a chance of burning a piston, right? Am I missing something here?
Also, if a fuel kill is okay, isnt there someway to run it through the PC3?
Thanks
  
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jlewis02
Expert Class
Posts: 195
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posted September 24, 2011 02:25 PM
I would not do a fuel kill when running nitrous but thats just me.
I have always had an ignition kill on all my other bikes.
Still foot shifting the 14.
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08 ZX14
1.57 60'
6.09@124
9.24@155
SWB 5400ft DA 50hp shot
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 24, 2011 04:51 PM
seeing how nitrous doesnt burn.... if theres no fuel going in during the kill time and just cold nitrous... its going to cool off the piston not burn it up
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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01smokes
Needs a job
Posts: 2243
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posted September 24, 2011 08:09 PM
I kill everything when I shift. I kill nitrous fuel and ignition.
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jarhead
Expert Class
Posts: 418
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posted September 25, 2011 06:24 PM
You are good with the tprs, I ran it for years and it was money well spent. I killed with fuel as well. The TPRS is the way to go when using a dry shot. If I am not mistaken it will even shut off the spray if you hit the limiter. My engine had 13k and hundreds of nos passes on it when I sold it and it is still running today.
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indynic
Expert Class
Lil Show, Lil Go
Posts: 258
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posted September 26, 2011 07:08 AM
quote:
seeing how nitrous doesnt burn.... if theres no fuel going in during the kill time and just cold nitrous... its going to cool off the piston not burn it up
I understand the Fuel Kill as killing the fuel ONLY. Am I mistaken?
Okay, so with the TPRS, I am planning on making the Nitrous Window 6k to 10500 rpm, 2nd gear and up. Once I get above 10500, I plan to shift.
BUT, what if I have a Fuel Kill and accidentally shift @ 10400 rpm (which would still be in the nitrous window). Based on my understanding of the fuel kill, wouldnt that leave spark and nitrous still in the motor. You are saying that would not burn?
Thanks for the input.
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hyperdriver
Parking Attendant
wheelies to the parking lot
Posts: 29
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posted November 20, 2011 06:21 AM
 Edited By: hyperdriver on 20 Nov 2011 14:23
nitrous kill during shift
quote:
I kill everything when I shift. I kill nitrous fuel and ignition.
hey everyone, new guy here, a question or 2 please.
i have a zx14
i have the msd sb6 that kills for the airshifter
i also have the PCV/5
how should i kill the nitrous on the shift
i will tell you how i was thinking and then you tell me what you would do
i was thinking of having the nitrous solenoid "signal" to go through a standard 12 volt normally closed relay
then use the "brief" signal that goes to the shift solenoid to briefly energize the coil of the 12 volt relay that i added which would briefly interupt/open the nitrous "signal"
would/could/should i do it like that
how would you do it?
thanks to anyone that answers!
.
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kawasakijockey
Pro
Posts: 1876
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posted November 20, 2011 06:55 AM
Edited By: kawasakijockey on 20 Nov 2011 14:57
I wouldnt bother to kill the nitrous on the shift because it is milliseconds of kill time. By the time the relay and solenoid react the shift is already done. A window switch would benefit you here or wire the relay to the pushbutton that you shift with. Then the nitrous will stay off as long as you have your thumb on the button.
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Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
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Big_T112
Pro
Posts: 1061
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posted November 20, 2011 08:04 AM
Fuel kill helps get rid of the throttleblade bending backfires from your airshifter. I don't think it is a big deal on the 15 but I have ruined many sets on the Busa. You can tell because at idle it sounds like the TB's need sync.
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boostphreak
Expert Class
Posts: 168
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posted November 20, 2011 09:25 AM
If you have fuel,nos, and spark firing in the cyl. You take away fuel, It will lean out and melt pistons
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06redzx14
Pro
Posts: 1022
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posted November 20, 2011 09:59 AM
Nope no combustion without fuel.
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06 alien head, no flies, PC+hub, 16/45 44 43, air shifter, dry shot
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boostphreak
Expert Class
Posts: 168
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posted November 20, 2011 10:41 AM
Let me try again. If you have all that and run it up on the rev limiter, taking away some of the fuel it will lean out. which was not what this post was about...sorry
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hyperdriver
Parking Attendant
wheelies to the parking lot
Posts: 29
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posted November 20, 2011 10:47 AM
quote:
I wouldnt bother to kill the nitrous on the shift because it is milliseconds of kill time. By the time the relay and solenoid react the shift is already done. A window switch would benefit you here or wire the relay to the pushbutton that you shift with. Then the nitrous will stay off as long as you have your thumb on the button.
good advice thanks
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