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Old 09-10-2008, 09:12 AM
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Originally Posted by ATVracr
BTW.... 78N jet is more than 200

A Nitrous jet size of .078" or 1.9812mm should produce:
274.76 HP with 1 port(s)

Actual HP to the wheels: 233.55 HP
78/ 46 is what the nitrous daves paperwork recommends for a 200 shot.

jl are you running c16 gas? that made a huge diff in the jetting. with 93 octane pulling from the rail the 46 produced very similar results.
Old 09-10-2008, 09:45 AM
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I'm running Torco 118 Nos fuel, which is a little better then C16.

I know I have my setup jetted a little on the rich side, but I didn't think it was that far.

I'm gonna play with it some more a week from Friday weather permitting, but I think as far as I will prpbably go is a 65/43, unless I can get a couple other jet sizes between now and then, in that cast I may go 67/43, or 65/42 depending on what I can get my hands on.

Either way, with the gain I saw from going down to a 43 from a 44 on the fuel side, I think it's gonna pick up quite a bit.
Old 09-10-2008, 04:18 PM
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Originally Posted by Nitro Dave's Nitrous Outlet
LS2 bait.. Great numbers...

I have to ask. What lenth lines are you using feeding our plate.. I done a vette install for vette magazine and we seen the same results with the rich spike with our plate using the two ft hoses. On most applications the airfuel hits good and steady which proves our plate is the best solution for making HP with out flow restrictions on the fuel side of the plate...

Thanks
Dave
I have one on my LS2 and I have the same rich spike when it is activated. My lines are VERY short. Then it will lean WAY out up top.

Awsome results!
Old 09-10-2008, 04:24 PM
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Originally Posted by ATVracr
BTW.... 78N jet is more than 200

A Nitrous jet size of .078" or 1.9812mm should produce:
274.76 HP with 1 port(s)

Actual HP to the wheels: 233.55 HP
Wayne. Do you mind sharing with me what you are using to come up with that number. PM me if you would like.
Thanks
Dave
Old 09-10-2008, 05:42 PM
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This is what he's using:

http://www.robietherobot.com/NitrousJetCalculator.htm
Old 09-10-2008, 08:43 PM
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Robie the robot is awesome...
Old 09-11-2008, 01:44 PM
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im going to post robbie as a sticky, i like that allot
Old 09-11-2008, 01:46 PM
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jl and atv, tossed you guys a shout out in the new sticky
Old 09-11-2008, 02:05 PM
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ATV showed me that a while ago... that's all him.
Old 09-11-2008, 02:09 PM
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Yep. Its a handy tool.. Not exactly a 100 percent accurate but a great starting point for tunning..
Dave
Old 09-11-2008, 06:17 PM
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That calculator says I'm WAY heavy on fuel, and I know that I am on the rich side, but I dunno if I'd follow it completely....

I do have a 65 nitrous jet (up from 63) and a 42 fuel I can put to the car now though... one step at a time, they're gonna get in there as long as the plugs stay looking good.

Got some #10 heat range plugs too today, to add a touch more safety net
Old 09-11-2008, 07:59 PM
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We have found robie to be a little on the rich side.

JL, your on the really rich side ... haha
Old 05-07-2009, 03:31 PM
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atv, what pressure would you recommend to use on a high psi standalone? 45-60? i was thinking 45 may require the pump to not run as hard?
Old 05-07-2009, 10:20 PM
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Originally Posted by 94 guy
atv, what pressure would you recommend to use on a high psi standalone? 45-60? i was thinking 45 may require the pump to not run as hard?

If its a stand alone I would run it at low pressure, there is ALOT more info and tuning help when your using low pressure.

Post up your combo and what your trying to do.
Old 05-08-2009, 01:24 AM
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Here's another calculator they are close 325bhp 276rwhp for robbie and 328bhp 279rwhp for CF. These calcs are all over the net. I can put them out in math formulas if you guys want. the Robbie set-up can be bought and put on your site if you like, or techs site.
calculator
Robert
Old 05-08-2009, 06:33 AM
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well i want to use my nitrous outlet 90 plate and the jetting it comes with. the jet map they provided me says i can go with 45 or 60 psi. i was thinking the pump in the standalone would be better off at 45 than 60? just based on it running harder at 60? the jet map calls for 62-38.




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