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  1. #1
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    Seems to go from 8180 to 7850

    Ski pulls really hard all the way to 8180 then once there and moving seems to bog down to like 7800 to 7900, at full throttle, do u think its the factory fuel pump is not giving it enough gas with the RRFPR and the ET 137 wheel?


  2. #2
    Having Fun jp1300r's Avatar
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    Whats your fuel pressure doing at WOT? Do you know AFRs at WOT?

    Add: Maybe all over the rev limiter.

  3. #3
    AKA: Larry lafjax's Avatar
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    Quote Originally Posted by JonnyRXT View Post
    Ski pulls really hard all the way to 8180 then once there and moving seems to bog down to like 7800 to 7900, at full throttle, do u think its the factory fuel pump is not giving it enough gas with the RRFPR and the ET 137 wheel?
    I bet you are running lean and you are on the limiter at 8200. You will eat up your exhaust manifold flange quickly running like that...what injectors do you have?? You need to back it down to 8100 to stay off the '07 limiter

  4. #4
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    when i was running it with just the X charger it was set at 58psi with a 1:1 raise and i turned it up to 60psi with the ET 137 wheel, so if ur on the limiter it will pull timing and chop ur R's back down.

  5. #5
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    bump

  6. #6
    2006 Turbo RXP boBO's Avatar
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    First do compressions test to the three pistons?
    Second check the slip in your charger
    After that we can judge

  7. #7
    S2R's Avatar
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    Quote Originally Posted by jp1300r View Post

    Add: Maybe all over the rev limiter.
    +1

  8. #8
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    yeah compression is fine in all 3 holes, also charger only has 10 hours on it, slip was 22 inch pounds when installed, it ran fine for about an hour or so then started to do the 8180 8160 to the 7800 to 7900 and it would go back up to 8180 to 8160.

  9. #9
    Gotta love this sport! 05Limited's Avatar
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    Jonny... after checking out every alternative, you might want to change out the MAP sensor on the intake manifold. These same symptoms occurred on Annette's ski and after weeks of scratching my head, the new MAP sensor finally fixed the problem.

  10. #10
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    that might be something to check but i also think i am maxing out the fuel pump i mean i am seeing 13 to 14 psi out of the charger and at 60 to 62 psi base its seeing over 75psi out of the reg.

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