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Thread: RXP Stage II

  1. #1

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    RXP Stage II

    Hey guys. I just got my '08 RXP and Im on the 5th hour of break in. I am planning on jumping right to a stage II. Is there a big increase in fuel usage with the stage II? What if I stay within stock speeds?

    I see riva has a nice stage II. Is there anything that should be changed from the kit or maybe a custom kit made thats more bang for the buck? I would like to get a BOV when this all gets put in. I cant wait to hear a thru hull exhaust. Low to mid 70s would be nice. Probably under 3k. Ive seen the stage II for like $2850.

    I really like the new OPAS blockoff I seen. Those black fiberglass ones coming out soon. Maybe wait to do it then instead of getting the riva blockoff that comes in the kit. I also need a finger lever. This thumb thing is so stupid. My whole arm hurt after 4 hours.

    Also with the pump wedge I know it raises the jet angle up. Can I still get the OEM down angle? It seems like I need the extension linkage? I like how it stays planted when trimmed down in the chop. Seems like the Riva 4" intake would be better than the 3" included with the stage II but do I need a 4" with the mods Im looking at.

    Thankx


  2. #2
    Avion3333's Avatar
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    Quote Originally Posted by Speed_Freak_039A View Post
    Hey guys. I just got my '08 RXP and Im on the 5th hour of break in. I am planning on jumping right to a stage II. Is there a big increase in fuel usage with the stage II? What if I stay within stock speeds?

    I see riva has a nice stage II. Is there anything that should be changed from the kit or maybe a custom kit made thats more bang for the buck? I would like to get a BOV when this all gets put in. I cant wait to hear a thru hull exhaust. Low to mid 70s would be nice. Probably under 3k. Ive seen the stage II for like $2850.

    I really like the new OPAS blockoff I seen. Those black fiberglass ones coming out soon. Maybe wait to do it then instead of getting the riva blockoff that comes in the kit. I also need a finger lever. This thumb thing is so stupid. My whole arm hurt after 4 hours.

    Also with the pump wedge I know it raises the jet angle up. Can I still get the OEM down angle? It seems like I need the extension linkage? I like how it stays planted when trimmed down in the chop. Seems like the Riva 4" intake would be better than the 3" included with the stage II but do I need a 4" with the mods Im looking at.

    Thankx

    Do a search on budget projects. These consist of XS intercooler, rrfrf, X-charger/Rude/2Rude, 42 injectors, not sure of the prop, BOV, thru hull etc. in all i thinks the cost will add up to lil under 3k and will get you with speeds up to 78mph

  3. #3
    SeaGoat's Avatar
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    You can also do a search for the kanaflex 4" air intake mod under "How To's". It will perform better then the riva 3" that comes with the kit.

  4. #4

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    Ive read about the Kanaflex or w/e. I downloaded the PDF install for it. Didnt seem like my type of thing. Id rather buy a Riva 4"

  5. #5
    Does riva make a 4" front intake?

  6. #6

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    Is goes like right behind or under the seat. Its a rear intake goes like straight up from the supercharger.

    http://www.4-tecperformance.com/inde...roducts_id=447

    Very overpriced. Maybe I will use something different unless I can get a deal on one. $400 is very steep. I thought it was $299

  7. #7
    Make your own rear air for less than a $100.

  8. #8
    SeaGoat's Avatar
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    Just remember. There's a hightened chance of water ingestion with the rear air. And with the filter installed it won't flow as good as the front 4" air. With the filter removed there's an even higher chance of ingestion. The difference in flow isn't great and the rear air without filter is the best performance mod but if you like to romp around on your ski and do donuts, jump wakes and surf (the ski tends to land tail end down) then it's probably not for you.

  9. #9

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    You guys are right. I just looked at the homemade 4" thread and its a excellent idea and writeup. Cheap and should work great.

    I guess the biggest decision is supercharger or supercharger impeller. I was reading around and somewere it said x charger yields around 77-80 mph on the RXP. Is that possible? Is the RXP-X a bigger boat than the RXP? I almost need a mix of fuel economy and boost. I know those things dont usually go together. But I heard the RXP-X skis eat twice as much fuel as the RXP.

    Do the sponsons make that much difference or could I skip those?

  10. #10
    JFizzleJR's Avatar
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    Skip the sponsons.

    Here's my vote considering your budget and goals.

    Riva S3 S/C impeller and front cover
    XS Intercooler (best bang for the buck)
    42# fuel injectors
    Homemade 4" front air intake (best bang for the buck)
    Riva intake grate (better hookup and speed over stock)
    15/20r 4 blade impeller
    SS wearring
    OPAS block-offs of your choice
    Riva rear exhaust (nice tone but not obnoxiously loud)

    This should yield upper 70s with not too much change in fuel economy or reliability. Anything bigger on the charger and you'll be having to maintain the slip more frequently, especially in rough water. You can do a BOV, but most recommend against it.

    http://www.4-tecperformance.com/inde...roducts_id=366
    http://www.4-tecperformance.com/inde...roducts_id=983
    http://www.4-tecperformance.com/inde...roducts_id=363
    http://www.4-tecperformance.com/inde...&products_id=5
    http://www.4-tecperformance.com/inde...products_id=12
    http://www.4-tecperformance.com/inde...roducts_id=401
    http://www.4-tecperformance.com/inde...roducts_id=301

    Don't forget the 'greenhulk' coupon code for 10% off most of the above products.

    The above list will run you about $2500 and can't be beat for that kind of money spent.

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