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Thread: injector duty cycle??

  1. #21
    Senior Tuner
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    Quote Originally Posted by skinnypimp-ss View Post
    ...so i installed a racetronixs 255 and a hot wire kit at 65psi.
    You do realize that the factory injector values are going to be off for anything other than 58 psi, correct? I'd highly suggest you get your fuel pressure back to the factory 58 psi.

    ...the injector duty cycle was still at 110%. i replaced my injectors with some out of a low milage 02 ws6(28.8lbs) and my injector duty cycle is still around 105%.
    What AF meter are you using?

    I've seen the stock 28.x injectors make it to 390 to 420 without issue, but this also depends on the age of the injector and accuracy of the wideband (making sure it isn't tuned too rich). I actually saw them make it to 43x range once on an '02 Z06, but this is a RARE example.
    Formerly known as RWTD

    Toys: '22 Tesla Model S Plaid / '20 Chevy Duramax / ?20 Sea-Doo RXT-X (2)

  2. #22
    Tuning Addict WS6FirebirdTA00's Avatar
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    Off an ASA tune (they use the same injectors).
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  3. #23
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    Quote Originally Posted by WS6FirebirdTA00 View Post
    Off an ASA tune (they use the same injectors).
    Which Holden and year, if you don't mind? Sorry if I don't realize the obvious.
    Formerly known as RWTD

    Toys: '22 Tesla Model S Plaid / '20 Chevy Duramax / ?20 Sea-Doo RXT-X (2)