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  1. #1
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    R and D reflash R3 and afr

    Just to let guys know how these work. The reflach ecu just like the stock will reference many sensors ,main one being the map sensor, to determin the correct afr. The map sensor measures vacum and boost. I just put an r3 on a box stock fzr with an air filter and ribbon delete. Rpms gained were right at 400 and rpms with this nozzle and prop were at 8100. The afr was dead on at 11.7 to 12.0. The exact same as before the ecu swap.Just a whole lot mor pull and top speed.
    So to be clear. any where from compleatley box stock up to and including the c3 wheel (12 to 13 pds boost) even with a big intercooler the reflash will AUTOMATICLY adjust the afr to the correct porportions.
    More boost than this ,then a riseing rate or some other way to raise the fuel output will be nessary.


  2. #2
    isa alnoaimi's Avatar
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    can i run the R3 with H1 wheel ? on stock injectors ?

    the R3 is tuned for 18 psi

    i think i will try the H1 with my R3 and see what happens
    i do have an AFR gauge , ill see how lean it will run , after that ill reflash the R3 to what ever reflash that support the H1
    Last edited by isa alnoaimi; 07-03-2013 at 11:37 AM.

  3. #3
    pwc4life's Avatar
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    Thanks for the info Rocketman, but I assume the 11.7 to 12.0 AFR are at WOT? How was the AFR at idle and midrange?

  4. #4
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    Its much better than stock in that 11.1 ect is to rich at idle. and the midrange for crusing is much better. it will improve gas milage considerable. In general u could say that it goes from 11.5s to 12.4s through the mid in boost and below boost its 13.1s and 2s vs the 11.5s below boost

  5. #5
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    Quote Originally Posted by isa alnoaimi View Post
    can i run the R3 with H1 wheel ? on stock injectors ?

    the R3 is tuned for 18 psi

    i think i will try the H1 with my R3 and see what happens
    i do have an AFR gauge , ill see how lean it will run , after that ill reflash the R3 to what ever reflash that support the H1
    It will not work. U need bigger injectors. 725s or so. + a RRFPR

  6. #6
    isa alnoaimi's Avatar
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    i have an FPR
    im runing the E1 wheel with R3 , and its always rich !!!
    i dropped my FPR to 40 PSI , my afr's at ideal was still rich 10.9

    i think its from our hot weather temps are 40 to 50 deg

    or maybe its from the high volume fuel pump that im using (auromotoive 340 ) from riva

  7. #7
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    Quote Originally Posted by isa alnoaimi View Post
    i have an FPR
    im runing the E1 wheel with R3 , and its always rich !!!
    i dropped my FPR to 40 PSI , my afr's at ideal was still rich 10.9

    i think its from our hot weather temps are 40 to 50 deg

    I have been reading about the problems on prop pitich. It seems to me u may have an engine problem of some sort. I would think that the speeds that u are getting are way too low for the mods u have and the ski is reportedly bucking at a very low speed. I do not know what advice to give but i would look at the engine.
    Do the normal things ck compression ck clutch ect.

    There is no way that an r3 will idle at 10.9 with stock injectors and 40 psi fuel pressure. If that was the case then it would not even start at what would be 9.9 with a stock ecu. Something is not right.
    122deg f at 60% humity? something is not right.
    Just trying to be helpful but I dont know what to tell ya.

  8. #8
    isa alnoaimi's Avatar
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    humidity 85 to 90

    believe me bro , i checked everything , cam timing , possible air leaks ,compression check,
    you name it , i checked everything that comes on mind

  9. #9
    pwc4life's Avatar
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    Quote Originally Posted by Rocketman View Post
    Its much better than stock in that 11.1 ect is to rich at idle. and the midrange for crusing is much better. it will improve gas milage considerable. In general u could say that it goes from 11.5s to 12.4s through the mid in boost and below boost its 13.1s and 2s vs the 11.5s below boost
    Thanks Rocketman! Looks like I will have my ECU reflashed from the current R1 to an R3 next year. I need a higher rev limiter to allow for a couple more bolt on parts and don't feel like touching the prop yet.

  10. #10
    yamahamiamiski's Avatar
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    Quote Originally Posted by isa alnoaimi View Post
    humidity 85 to 90

    believe me bro , i checked everything , cam timing , possible air leaks ,compression check,
    you name it , i checked everything that comes on mind
    your o2 sensor might be bad too

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