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  • Nitrous system input please

    I want to install nitrous on my car and don't really have any experience with tuning for it or what to stay away from. I was told the ZEX systems were a pretty safe way to go. I was wondering if anyone here has had any experience with ZEX good or bad.
    This is the kit I was planning on going with:

    http://www.summitracing.com/parts/ZEX-82235B/

    Along with the Full Throttle Timing Tuner:

    http://www.thunderracing.com/shop-by...oller_221.html

    Any input on either of these would be great, and also is there anything else I should consider getting.

    Thanks in advance.
    LOUD2000T/A
    '00 Trans Am M6, K&N filter, Airbox Lid, F.A.S.T. LS-X Intake, Stainlessworks offroad y-pipe, Loudmouth catback, Pro 5.0 shifter, Hypertech programming, 17" Torque Thrust II wheels, 12.97@113; '87 Monte Carlo SS; '91 Sonoma V6 4x4.

  • #2
    The biggest threat from nitrous is running lean. Do that, and you start burning holes in pistons. Make sure you have adequate fuel pressure and volume bu installing a killer pump. You should also add a low fuel pressure cut off switch in case something goes wrong. Keep the boosted power to no more than 50% of the engine's unassisted output and you should be safe. (example: 150 shot for a 300 HP base motor)

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    • #3
      I was only planning on sprayinga 125 shot. 150 would be the max that I would do. I read somewhere that the ls1 runs at higher fuel pressure than other small blocks already, so should I deffinately upgrade the fuel pump? I will add a low pressure shutoff switch to my list.
      LOUD2000T/A
      '00 Trans Am M6, K&N filter, Airbox Lid, F.A.S.T. LS-X Intake, Stainlessworks offroad y-pipe, Loudmouth catback, Pro 5.0 shifter, Hypertech programming, 17" Torque Thrust II wheels, 12.97@113; '87 Monte Carlo SS; '91 Sonoma V6 4x4.

      Comment


      • #4
        Originally posted by LOUD2000T/A
        I was only planning on sprayinga 125 shot. 150 would be the max that I would do. I read somewhere that the ls1 runs at higher fuel pressure than other small blocks already, so should I deffinately upgrade the fuel pump? I will add a low pressure shutoff switch to my list.
        Unfortunately, I can't tell you what the stock LS-1 pressure is, but all port fuel injected engines have elevated pressures. Nitrous, supercharger, turbo are all the same in regards to added fuel requirements. What most do is add a electric fuel pressure gauge in the dash or some other location that is visible from the driver's seat. There is a sender that screws into the pressure test port, the wires hook to the gauge in the cabin. This way you can observe the pressure under load and watch for any issues. If it were me, I would upgrade the pump to at least a 255lph pump and upgrade the wiring to the pump at the same time. You can never be too cautious when it comes to fueling requirements in a boosted engine.

        http://www.thunderracing.com/shop-by.../Fuel-Systems/

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        • #5
          I run a wet shot in my 02 Formula. Also don't forget to change plugs. I run 2 degree colder than stock AC Delco plugs. I tried the ngk plugs once and they were junk. Also if you are installing make sure to remove scrader valve inside fuel rail if this is where the kit gets its fuel from. I'm still running the stock fuel system and have had the car since 03.

          Looks also like it uses a power wing that mounts inside the bellows and points at the throttle body. Most important thing to watch here is that its always pointed to the throttle body opening. Sometimes the wing can slightly turn and thats when fuel gets sprayed on the bellows wall and eventually if not corrected will fuel to pool inside. It will eventually ignite inside the bellow.

          I personally wouldn't spray anything over 150. The results at the strip are amazing. Oh and don't even attempt to launch it on nitrous you will not hook up on street tires.

          My system is the basic Nitrous Works, with some parts from dyno tune nitrous. Dyno tune has some cool guages etc. I got my bottle warmer from them. I like that is maintains the bottle pressure to where I want it. It has an adjustment valve. Dyno tune also was the first to have digital pressure guages so you didn't have to run a small nitrous line thru your car. check em out http://www.dynotunenitrous.com/store...ts/default.asp

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          • #6
            Like Joe said, watch out for a lean condition, I would recommend a wideband lambda sensor to keep an eye on your AFR's, this is assuming you do go the route of properly tuning along with having proper fuel pressure to begin with.
            -Alex
            1995 LT1 ECU (GREAT for flashing!)
            ZO6 wheels (clones)
            LED exterior and interior lighting
            With questionable guts:
            Forged bottom end
            free flowing 3 1/2" exhaust w/
            pacesetter longtubes
            T56 with a 6 puck ceramic copper heavy duty clutch
            Built T56, 3.5" 4130 driveshaft w/spicer HD's
            K&N RAM air from 96 ws6
            96? ws6 hood
            96? ws6 spoiler
            full emissions delete
            polished heads with oversize valve job
            Edelbrock IAS shocks
            Full tubular Chassis minus k member
            Daily Driver and love it that way
            Motor is not what you'd think.

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