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  1. #1

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    What kind of boost can stock 2005 RXT run?

    I have a 2005 RXT that is stock as far as I can tell. It had around 85 hours and I bought it used. How much boost does a stock supercharger make? If the supercharger and injectors are upgraded, how much boost can you run safely with an engine that has not been modified?


  2. #2
    imp0ster's Avatar
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    define "not modified"

    Anything above an X and you need to tune it well and log.

  3. #3
    boost junkie skidoochris's Avatar
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    if the motor is good (no overheat or detonation and not worn out)
    they don't make a big enough SC to hurt the stock internal parts
    now over reving or a bad tune is a different thing

  4. #4

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    Stock charger will make around 7 I believe. X charger or et 127 will make 11 psi. As stated previously, once you move past that you will need to watch and work your fueling to avoid problems.

  5. #5

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    If I decide to go X charger I will go ahead and get the Bosch 42# injectors as well just to be safe. Pretty sure based on what I have read and been told on these boards I would do the x charger over a wheel upgrade. Might do a stock rebuild this year, order x charger after season, then shelf stock SC as a spare.

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  7. #6
    Boost-A-Holic's Avatar
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    a stock 4 tec is limited to how much boost itll take cuz of the intake manifold. That superglued 2 piece plastic will only take like 15lbs of boost before itll want to split. Ask me how i know lol......The motors themselves are pretty damn stout

  8. #7
    imp0ster's Avatar
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    ^---- First time with the ET CR wheel and the rear seat off BOOM!!! Scared the hell out of me lol

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