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  1. #1

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    is a spring upgrade all I need to turn 8900?

    I have an X charger, external IC, 60# inj, 4" intake and was hoping I could just do springs and retainers and be able to turn 8900?


  2. #2
    wotxxxsd's Avatar
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    What year and model ski?
    Your also going to need a 8900+ecu.

  3. #3
    Moderator Snoman's Avatar
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    Dont forget a set of light weight valves,Injectors to suit your fuel mapping needs....A way to monitor/adjust AFRs...IF yous ski has any major amount of hours on it i would freshen the bottom end up..

  4. #4

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    its an 06 rxp with around 80 hours, I do not want to do valves, I just picked up a riva ECU and Vtech from the classifieds and I have an innovate wide band I can use for logging. Im waiting to hear back from Vtech on how to data log.

  5. #5
    Moderator Snoman's Avatar
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    Without lightweight valves, i dont know if i would spin it to 8900...but thats just me....

  6. +1 by:


  7. #6

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    What would you spin to?

  8. #7
    Moderator Snoman's Avatar
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    8500 max..

  9. #8
    Boost addict hotbird's Avatar
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    with stock valves and supertech springs you can push a 8650 limiter.

    No way would I run a 8900 or 9200 limiter without supertech valves and springs.


  10. #9

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    Ya I planned on doing the supertech springs and retainers I Just dont want to pull the valves...

  11. #10
    imp0ster's Avatar
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    <---8900 stock valves

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