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  1. #1

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    Rrfpr and a begi fpr,how big injectors?

    How big injectors can you run with a rrfpr and a begi fpr setup,and still keep a ok afr at idle and a perfekt afr at wot?


  2. #2
    speedskixp's Avatar
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    Quote Originally Posted by lars k View Post
    How big injectors can you run with a rrfpr and a begi fpr setup,and still keep a ok afr at idle and a perfekt afr at wot?
    With stock ecu 50s is about the max.

  3. #3
    Gone in 3.0 seconds... RXPT400's Avatar
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    Quote Originally Posted by lars k View Post
    How big injectors can you run with a rrfpr and a begi fpr setup,and still keep a ok afr at idle and a perfekt afr at wot?
    Tell the set-up and I will tell you what to run and how to do it...

  4. #4
    R88ory RXP's Avatar
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    I think some1 I was talking the other day had 60s but im not sure that it was stock ECU. With the BEGi you can go down real low with the base pressure. Im just about to start setting my ski up with the BEGi. Got finished fitting it last night. I think that you could run 55s with a real low base. The guy I was talking to was running 15psi base, but I read that anything under 30psi could be detrimental to spray pattern out of the injector. R88

  5. #5

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    Quote Originally Posted by speedskixp View Post
    With stock ecu 50s is about the max.
    Yes stock ecu,i have a set 55's,how much boost will they support?

  6. #6

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    Quote Originally Posted by RXPT400 View Post
    Tell the set-up and I will tell you what to run and how to do it...

    I was thinking of a turbo set-up with a stock ecu

  7. #7
    speedskixp's Avatar
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    You may be able to run the 55s on stock ecu with the begi and get your AFR in the high 11s at best at idle. I am running 48s on my 05 stock ecu with a 30lb idle pressure and my idle A/F is about 12.5 cruising in the high 13s-14. You may be able to turn it down a litte more but my turbo smart reg does not go much below 30.

    I have heard of people running idle pressure a low as 15lbs but I have not tried it that low and dont know what reg would work at that low of pressure. Not to mention that the injectors need some pressure to spray correctly.

  8. #8
    Gone in 3.0 seconds... RXPT400's Avatar
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    The 55s injectors will support up to 20psi of boost but the stock ecu map wont go that far with timing ,the thing is to dial them right with the begi. remember stock map sensor only reads up to 20 psi over that you are on your own...

  9. #9
    speedskixp's Avatar
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    Quote Originally Posted by lars k View Post
    Yes stock ecu,i have a set 55's,how much boost will they support?
    I'm not sure how much they would support exactly but I'm pretty sure they would be good for close to 350 hp atleast.

  10. #10

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    Quote Originally Posted by speedskixp View Post
    You may be able to run the 55s on stock ecu with the begi and get your AFR in the high 11s at best at idle. I am running 48s on my 05 stock ecu with a 30lb idle pressure and my idle A/F is about 12.5 cruising in the high 13s-14. You may be able to turn it down a litte more but my turbo smart reg does not go much below 30.

    I have heard of people running idle pressure a low as 15lbs but I have not tried it that low and dont know what reg would work at that low of pressure. Not to mention that the injectors need some pressure to spray correctly.
    I have this one http://www.demon-tweeks.co.uk/produc...de=FSEMSV000PA (Adjustable between 15.0 PSI - 90.0 PSI.)
    Do i understand it correct,i can run up to 20psi before the stock ecu and mapsensor cant keep up?

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