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  1. #1
    BOOSTED's Avatar
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    RXP Riva Stage II witout IC, Mph ???

    I took my RIVA Intercooler out cause it got glogged, what Mph and what Rpm should i be seeing?? Currently i see 70Mph indicated @8000-8050Rpm stock ecu does it sound right with the stock cooler? It's a '04 btw.


  2. #2
    Water4fire's Avatar
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    Yea, that sounds about wright. Maybe a mph slow.

    ,

  3. #3

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    I run 71 and 72 every day and this is my setup. on cold days with no humidity I run like 73.6 best this year see attached for best ever.

  4. #4
    Quote Originally Posted by BOOSTED View Post
    I took my RIVA Intercooler out cause it got glogged, what Mph and what Rpm should i be seeing?? Currently i see 70Mph indicated @8000-8050Rpm stock ecu does it sound right with the stock cooler? It's a '04 btw.
    Ok, so Stage 1 + vortech SC impeller + thru hull + RIVA sponsons + pump wedge.

    Im running a Stage 1 at 71+mph. I'd say you should be a little faster.

  5. #5
    BOOSTED's Avatar
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    I was guessing the same thing that it should be a bit faster for a Stage II with the stock cooler. I will also fill the rideplate holes this week so that should gain a 1 Mph. But still think it needs more Mph. Temps were 89/89

  6. #6
    Don't expect to gain that much from the rideplate holes.

    From my experience and a few others we saw about a .5mph gain with consistancy.

  7. #7

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    does any one have bkit or up to stage three without innercooler wonder what speeds would be without innercooler. whanting to figure out if it is worth modding without innercooler. just tired all the problems vortech innercooler gives. just baught yamaha dont whant to give up on rxp it is first love.

  8. #8
    Site Admin Green Hulk's Avatar
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    The problem with any supercharger and especially the B kit is the extreme heat it creates when the SC compresses the air. Without an IC you would be pumping very hot air into your engine. Almost 280 degrees versus 95-100 degree temps with an IC. This would kill power.

  9. #9

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    do you think with the amount of pour you lose it will still put in 75-76 instad 78-79 or more than that.

  10. #10
    Site Admin Green Hulk's Avatar
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    Maybe? It would be intersting to see the results from it. If you do test this please come back and share your results.

    You may have to take a bunch of pitch out of your prop, or even step down to a 14/19 because its going to kill RPM's.

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