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casper adjustable fuel pressuer gage question

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  • casper adjustable fuel pressuer gage question

    I need to add some more fuel into my endine after I bored it 20/over will the casper fuel presure regulator work ok. Does it give it more fuel to the cylenders.

  • #2
    Of course it will if you boost pressure over stock.
    1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
    1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
    Because... I am, CANADIAN

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    • #3
      Will a bore and hone job of .020 really warrant more fuel being needed? It is only adding a whopping 3 ci of displacement, and slightly raising the CR...
      Regards,

      Todd E. Johnson

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      • #4
        Originally posted by tejohnson
        Will a bore and hone job of .020 really warrant more fuel being needed? It is only adding a whopping 3 ci of displacement, and slightly raising the CR...
        Not that alone.

        There are many stock rebuilds that are .20, .30, or more over and never need anything adjusted.

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        • #5
          but im also adding a stage 1 cam. Im just wondering if it will help, not really if I need it. But thanx for the advice.

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          • #6
            You would prolly be better served to reprogram the PCM. Your stock FPR will work just fine.
            Regards,

            Todd E. Johnson

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            • #7
              I have it maxed out already, Im running the RSM vortech supercharger on my 01 3400 Grand AM, They reprogramed the PCM to give enough fuel for the SC.

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              • #8
                That makes quite a difference The caspers may not be a bad idea since it is 1:1 boost referenced (more pressure under boost), but not for adding overall pressure. If your IPW's are getting pretty high, and you are going lean, then you should also consider replacement injectors. It would be more helpfull to have a scan of a few runs once the cam install is done.

                Hopefully you are not relying on the programming RSM did for their kit...
                Regards,

                Todd E. Johnson

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                • #9
                  Yes I am relying on the tuning RSM did, is that bad. What should I buy to tune my car.

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