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How much is to much fuel pressure

Discussion in 'General Tech and Maintenance' started by vwfox361, Jan 12, 2010.

  1. vwfox361

    vwfox361 New Member

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    At 44psimy car was leaning out after about 4500 to redline bumped up the pressure to 55psi got a little better but still leans from 6000-7200. should i increase psi or would it hurt my motor?
    obd1 phearable chipped pr4 b20b p8r head with p&p manifold and tb
     
  2. FLounder

    FLounder power hungry VIP

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    it is probably the tune that is causing the lean condition. get that sucker dyno tuned if you want the most out of it.
     
  3. pooksy64

    pooksy64 RidetilldeathdousparT

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    Its the tune not your fuel psi. its whatever they set your fuel table @, when you raise the fuel psi your increasing the amount of fuel that is being pushed through the injectors @ the same preset (tuned) injector fuel table rate.
     
  4. vwfox361

    vwfox361 New Member

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    should i remove the chip?or get a fuel controller and wideband?
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Fuel controller and wideband would work- proper tune on a dyno and the street with a wideband and a true tuning solution that's not a piggyback would be MUCH better. If you're already going to spend the cash on a wideband, go ahead and look into one of the free chipping solutions for OBD1 ECUs.
     
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