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  1. #1

    Join Date
    Apr 2013
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    new york
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    stock injector psi ?

    dose anyone know what the stock injector psi is on a 2009 rxtx 255?
    i was thinking about upgrading to 42 psi , tell me what you think
    thanks boater b


  2. #2
    Autism Speaks. Its Time To Listen gOt BoOsT's Avatar
    Join Date
    May 2011
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    Cali
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    injectors are rated in lb/cc not psi. your year stock injectors should be green and are 42#/420cc

  3. #3
    boost junkie skidoochris's Avatar
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    Mar 2012
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    Davison, Mi
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    welcome to the GH Boater B
    why do you think you need a upgrade..what are your mods

  4. #4

    Join Date
    Apr 2013
    Location
    new york
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    thanks for the feedback guys , I saw 42 lb injectors on ebay and the add said a great upgrade for 215 and 255 apparently I already have 42s stock , good thing I didn't buy them
    thanks again

  5. #5
    dnielsen's Avatar
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    May 2008
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    Shreveport, Louisiana
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    In order to run bigger injectors than your stockers you will need to do other mods as well or you'll hurt performance. Bigger injectors = more fuel = richer air to fuel ratio (AFRs). If your adding more fuel (bigger injectors) to a stock machine you need to do all the other stuff to increase air flow to the engine such as a bigger supercharger, maybe an aftermarket air intake and exaust system, or even an ECU upgrade and etc. If you do all this you then need some way to either control fuel pressure such as an adjustable FPR or the ability to control duty cycle of the injectors. With all this you will still need a way to monitor your AFRs to ensure the engine is running fuel mixtures in the safe zone.

    Point is, be careful throwing parts on the machine unless you fully understand the consequences. GH is a great place to learn all the ins and outs and most of these guys are more than willing to offer assistance.......Welcome to the Hulk!

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