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Thread: 15 mustang p1sc fuel settings assistance requested

  1. #1
    Potential Tuner
    Join Date
    Jul 2025
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    15 mustang p1sc fuel settings assistance requested

    just finished installing the p1sc and im trying to get it running before i install the id1050s. car was on sct before so i no longer have a base tune for the gt350throttle body. i installed twin dw400 pumps dead head return style with an aeromotive regulator set at 43psi. i changed the infered hi and low to 43.5 psi but im missing something. anyone able to take a look and help a guy out?
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  2. #2
    Potential Tuner
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    Jul 2025
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    update, i bumped my base fp up tp 55 and flahed that in aswell. it started and would run after some massaging of the pedal but it did stall at idle.

  3. #3
    Senior Tuner veeefour's Avatar
    Join Date
    Oct 2016
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    Poland
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    2,042
    You choose 43psi yet injector data starts at 50. All of them should run on at least 58 psi aka 4 bar.

    You run a stock MAF as your tune seems to have stock MAF? If you are using GT350 TB you should get GT350 data in tune, wont run properly on stock model