SNIPER N2O Kit with SNIPER EFI. Jetting size conversion help needed.

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  • rel3rd
    Senior Member
    • Oct 2016
    • 253

    SNIPER N2O Kit with SNIPER EFI. Jetting size conversion help needed.

    Recently installed a Sniper EFI setup on my car, and also have a Sniper nitrous kit that I'd like to use with it. The Sniper plate kit is originally for the 4150 carb. P/N A7001-SNOS. I run a Tanks Inc. in-tank EFI pump, which works great with the EFI setup. I originally had considered using a low pressure regulator, to lower fuel pressure before the fuel solenoid, relying on the EFI return to allow adequate fuel return, as it does now. I've found that I can use the plate with high pressure fuel, but need to know what the conversion rate is to do so.

    47 Nitrous/53 Fuel is what NOS suggests for a 100 HP jetting for carb. What jet would I need for fuel, with 58.5 psi of fuel pressure, to reach the same 100 HP rating? Or how can I find and/or use the formula to tell me? I'm going to eventually up the nitrous to 150 HP, or even 175 HP if possible, FWIW.
  • Danny Cabral
    Administrator
    • Dec 2009
    • 35959

    #2
    Contact NOS Tech Service (LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes SS dual 2.5" exhaust, SS off-road X-pipe, SS shorty headers, OEM smog pump converted vacuum pump, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, highly modified Ford 4R70W transmission, FTI 9.5"/3000 stall/triple disc TCC, B&M Hammer shifter, Stifflers trans crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.73 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

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    • rel3rd
      Senior Member
      • Oct 2016
      • 253

      #3
      Originally posted by Danny Cabral View Post
      Contact NOS Tech Service (LINK).
      Thanks. I'll do so in the near future.

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