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Thread: FAST Fuel injectors

  1. #1
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    FAST Fuel injectors

    I was wondering if anyone knew of or where to find information about FAST 39lb/hr injectors? (I.E. - duration, width, pulse) Anything that would help out to make it easier to tune my car for those injectors.

  2. #2
    Tuner JnJSpdShop's Avatar
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    Quote Originally Posted by ALC1016 View Post
    I was wondering if anyone knew of or where to find information about FAST 39lb/hr injectors? (I.E. - duration, width, pulse) Anything that would help out to make it easier to tune my car for those injectors.
    Pretty sure these are the same injectors in a Grand Prix GTP or any other GM 3800 Supercharged engine. You can grab good data from their OEM tunes

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  3. #3
    Tuner JnJSpdShop's Avatar
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    Found this text file on my tuning laptop

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  4. #4
    Quote Originally Posted by ALC1016 View Post
    I was wondering if anyone knew of or where to find information about FAST 39lb/hr injectors? (I.E. - duration, width, pulse) Anything that would help out to make it easier to tune my car for those injectors.
    they are basically ls3/ls7 injectors... use the data from an ls7 or ls3 car
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  5. #5
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    Quote Originally Posted by JnJSpdShop View Post
    Found this text file on my tuning laptop
    Good thing for efilive,lol
    98 s10 5.3 5spd.

  6. #6
    Tuner JnJSpdShop's Avatar
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    Quote Originally Posted by rynez06 View Post
    they are basically ls3/ls7 injectors... use the data from an ls7 or ls3 car
    They are not the same injector, use the data I provided or pull them out of a Grand Prix GTP tune and adjust the IFR table for LS fuel pressures

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  7. #7
    Quote Originally Posted by JnJSpdShop View Post
    They are not the same injector, use the data I provided or pull them out of a Grand Prix GTP tune and adjust the IFR table for LS fuel pressures
    no you're wrong... your thinking these are the white 36lbers (bosch pt#0280155868) that are in supercharged grand prix GTP's and Regal GS's... the fast 39lbers that the OP is talking about is a Gen 4 LS car Uscar connector injector....
    Owner of Cunningham Motorsports

    06 z06
    2016 camaro
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  8. #8
    Tuner JnJSpdShop's Avatar
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    Quote Originally Posted by rynez06 View Post
    no you're wrong... your thinking these are the white 36lbers (bosch pt#0280155868) that are in supercharged grand prix GTP's and Regal GS's... the fast 39lbers that the OP is talking about is a Gen 4 LS car Uscar connector injector....
    Okay didn't realize it was the shorty injectors but they are still not the same as OEM. The OEM tables might be a good starting point but you will have to adjust the values

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