Help on tuning 30 LB injectors in my 5.0

Discussion in 'Fox 5.0 Mustang Tech' started by pierce.nathan, Feb 17, 2010.

  1. First off I have no experience on tuning vehicles when it involves upgraded fuel injectors. My mustang contains the following:

    185cc intake 70cc exhaust aluminum cylinder heads
    cold air
    75mm throttle body
    bbk ssi intake manifold
    E303 Cam
    1.7 roller rockers
    255 lph pump
    35-70 psi adjustable fuel regulator
    30 lb injectors

    I don't know if the 30 lb fuel injectors are too much, but I thought that I might be able to just lower the fuel regulator to lessen the injectors. Any information would help. thanks
  2. Get a calibrated MAF or tune the ecu with a chip.

    You won't correct for 30's with the fuel pressure....
  3. I have a BBK 76mm MAF which is calibrated for cold air and 30 lb injectors. Is that really all I have to do? What should I set the fuel regulator to? I know that at stock for my car, they are set to 39psi
  4. Yep, set it to 39psi.
    You shouldn't have to change it...
  5. If you can get the air/fuel checked with a wideband just to make sure the calibration is good on the meter , they are not always 100 percent perfect out of the box