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  1. #1
    isa alnoaimi's Avatar
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    R3 reflash question

    hi everyone

    im using R3 reflash with E1 wheel and stock injectors

    i was thinking of upgrading to H1 wheel
    i know that i need a bigger injectors to run the H1

    can i use the R3 with a bigger injectors ? like 660cc or 725cc ,with out reflashing the ECU to support the bigger injectors ?
    im asking this cause in sedoo rxp 255 the stock injectors are 42lb, they install the 48lb injectors and still the stock ECU support them


  2. #2
    enforcer's Avatar
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    Quote Originally Posted by isa alnoaimi View Post
    hi everyone

    im using R3 reflash with E1 wheel and stock injectors

    i was thinking of upgrading to H1 wheel
    i know that i need a bigger injectors to run the H1

    can i use the R3 with a bigger injectors ? like 660cc or 725cc ,with out reflashing the ECU to support the bigger injectors ?
    im asking this cause in sedoo rxp 255 the stock injectors are 42lb, they install the 48lb injectors and still the stock ECU support them
    It depends on your AFR's...... I would suggest using an AFR gauge and an accurate tachometer. Boost is often the deciding factor along with air temps and water temp. Depending on your location you may be o.k. with just the RRFPR ( rising rate fuel pressure regulator).....You can use a larger injector but it may cause a rich condition in the mid range or low end but be just right on the top.....The main priority is to dial in the wide open throttle AFR and then that will determine the next course of action.Once the top end is dialed in you don't want to drop below 10.0 AFR in the low to mid range as this may cause hesitation from being too rich......

  3. #3
    isa alnoaimi's Avatar
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    i have an afr gauge ,FPR

    my question is can i run bigger injectors on R3 reflash ?
    R3 reflash is tuned to run stock injectors

  4. #4
    Yellow93's Avatar
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    Yes alot of people are running bigger injectors on an R3 reflash.

  5. #5
    isa alnoaimi's Avatar
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    so there is no need to send my R3 ecu to be reflashed again to support the bigger injectors ?
    also what injectors should i use ? 725cc or 660cc ?

  6. #6
    Yellow93's Avatar
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    Quote Originally Posted by isa alnoaimi View Post
    so there is no need to send my R3 ecu to be reflashed again to support the bigger injectors ?
    also what injectors should i use ? 725cc or 660cc ?
    I have no idea on an H1 what you should be using. I know that on an ET 15.5 wheel Jims Performance has many people running successfully with these 565cc injectors: http://www.ebay.com/itm/STi-Pink-565...fd29a3&vxp=mtr

    As has been mentioned previously, monitoring AFRs is VERY important.

  7. #7
    isa alnoaimi's Avatar
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    Quote Originally Posted by Yellow93 View Post
    Quote Originally Posted by isa alnoaimi View Post
    so there is no need to send my R3 ecu to be reflashed again to support the bigger injectors ?
    also what injectors should i use ? 725cc or 660cc ?
    I have no idea on an H1 what you should be using. I know that on an ET 15.5 wheel Jims Performance has many people running successfully with these 565cc injectors: http://www.ebay.com/itm/STi-Pink-565...fd29a3&vxp=mtr

    As has been mentioned previously, monitoring AFRs is VERY important.
    thanks yellow93

    ill call R&D and talk to glenn

  8. #8
    Yellow93's Avatar
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    Glenn will likely recommend you get his 725cc injectors and upgrade your R3 to an R8.

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  10. #9
    isa alnoaimi's Avatar
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    hmmmm

    i was going to ask if i can use bigger injectors on R3 without reflashing it again

  11. #10
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by isa alnoaimi View Post
    hmmmm

    i was going to ask if i can use bigger injectors on R3 without reflashing it again
    Just as I told you in PM. You cannot run 725 cc injectors with a R3 reflash. You will cause an extremely rich condition ad idle and midrange.
    To run the 725's you need to upgrade to the R8 programming. Glenn at R&D will tell you the same

    If you want to upgrade your supercharger you need to upgrade your tune
    http://www.4-tecperformance.com/inde...oducts_id=1589

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