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  1. #1
    Stockrxp's Avatar
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    same mph 400 less rpm

    ok did a few runs with the 3 rude and rude controller. as i figured i was hitting the limiter hard. 8650 (riva)

    Pulled the prop was pitched at 13/21

    repitched to 15/24.

    my boost was 15 psi at 8650 and at 8220 it was 13 psi. (i know its low but i am at 2200 ft)

    i was running 79 before the repitch, and ran 79 after the repitch. what gives?


  2. #2
    Water4fire's Avatar
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    Quote Originally Posted by Stockrxp View Post
    ok did a few runs with the 3 rude and rude controller. as i figured i was hitting the limiter hard. 8650 (riva)

    Pulled the prop was pitched at 13/21

    repitched to 15/24.

    my boost was 15 psi at 8650 and at 8220 it was 13 psi. (i know its low but i am at 2200 ft)

    i was running 79 before the repitch, and ran 79 after the repitch. what gives?
    YOu ran the same MPH with less boost at the 8220, Just re-pitch the prop and set it around 8600 and you will sing.

    The thing is you were all over the limiter the first time and the boat was held back. Backing out timming and fuel.

    You will see.

  3. #3
    Stockrxp's Avatar
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    ahh ok Dhoad is gonna send me a 8800 les cooke ecu will try to pitch iy for that. what leading edge angle is best for speed?

    ---------- Post added at 03:09 PM ---------- Previous post was at 03:06 PM ----------

    Quote Originally Posted by Stockrxp View Post
    ahh ok Dhoad is gonna send me a 8800 les cooke ecu will try to pitch iy for that. what leading edge angle is best for speed?
    oh yea i did notice at 8650 i saw my afr going to 12.2-12.4 . makes sense

  4. #4
    Quick question, what map are you running on rude controller with 3rude?

  5. #5
    Stockrxp's Avatar
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    Breon sent me a map, still need to tweek it rinning a little lean down low. at hot idle i am breaking up below 3000 rpm, afr sometimes hitting 18

  6. #6
    home of the dislexic fingers breon's Avatar
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    ya my ported head and cam makes a big difference down low...i wasnt lean at all down low...

    and i am at sea level as well...all plays in..no 2 set ups are exactly the same..but with the controler you can make it perfect..keep at it ..

    i had my base fp set at 60 and i was using a aeromotibe 1 to 1 reg...

    shoot for 13 -13.5 anything no boost...then 12.5 ish from 0 to 10 psi....then work it down to 11.7 as you get up in the boost ...i didnt see the 17 psi until i went to teh big throddle body and bigger intercooler...but the mid range should be way better than your old charger...

  7. #7
    Stockrxp's Avatar
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    yea mirange is wicked, it was 102 degrees when i was running it it at its hottest here. i have a Riva Gen 2 intercooler. base fuel pressure 61 psi. just need some time to get it right.

  8. #8
    dhoad's Avatar
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    Keep at it Bryce, top speed will be there when you get it dialed

  9. #9
    Stockrxp's Avatar
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    i was looking at my R.A.D......i was 5800 above sea level. given that if i had my rpms back up at 8600 and some good air 85 seems obtainable. we rode 126 miles saturday. fuel was terrible ($). no premium had to drive 40 miles for some

  10. #10
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by Stockrxp View Post
    ok did a few runs with the 3 rude and rude controller. as i figured i was hitting the limiter hard. 8650 (riva) aq

    Pulled the prop was pitched at 13/21

    repitched to 15/24.

    my boost was 15 psi at 8650 and at 8220 it was 13 psi. (i know its low but i am at 2200 ft)

    i was running 79 before the repitch, and ran 79 after the repitch. what gives?
    I would of thought boost would be a bit higher.
    At 8,600 rpm I am over 15+ psi with 2Rude on same water.

    Looks like you need to take some pitch back out to get tour rpm up to 8600.
    It is kinda hard to say for sure since You changed the pitch of the leading edge at the same time.
    I bet if you run the les ecu your going to have to go back closer to the 21 pitch to get your rpms up to whatever the ecu is programed for.

    That is kinda odd that your leaner down low then Breon at sea level.

    You ran alot of miles, there must of not been many donuts. Lol

    I hope to be out in that heat in next few
    weeks.

    Glad your boat ran without hitch first time out.

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