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  1. #1

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    Tach stop at 8000 need help.

    I have the RR ecu and my tach dont go 8550. Is the tach or the ecu? .


  2. #2
    Senior Member watermedic's Avatar
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    The tach will read higher. Did your rpm's go over 8000 before the ECU swap?
    What other modifications do you have other than the ECU and what kind of ski?

  3. #3

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    GTX SC 2003 My mods: RRecu,Intercoolers,scat pump, riva sc impellers, racing pistons, 4inch intake, riva intake grate, riva exaust, bore throtle, racing head gasket, water box mod, rr water inlet 158g. Is pulling real hard.

  4. #4
    Red Devil's Avatar
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    Quote Originally Posted by Rico
    GTX SC 2003 My mods: RRecu,Intercoolers,scat pump, riva sc impellers, racing pistons, 4inch intake, riva intake grate, riva exaust, bore throtle, racing head gasket, water box mod, rr water inlet 158g. Is pulling real hard.
    Rico,

    The 03 GTX tach's will not read past 8000 and there is nothing wrong with it. This is a pain in the A** with the 03 GTX's. You will need to go out and buy a tiny tach and install this or something similar.

  5. #5
    Senior Member watermedic's Avatar
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    Thanks for the correction RD. Should have waited until I found out what model of ski before I answered.

  6. #6
    Red Devil's Avatar
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    Try this site for finding the appropriate model...Also be careful now because if you have the new ECU and with your current set up, you might be banging the limiter and running way lean and not even realizing it. You really need to get that tach to get your true RPM reading. Your doo must be hauling....Nice mods!!!!


    http://www.watcon.com/Catalog_Pages/PET-2100_DX.htm

  7. #7

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    Quote Originally Posted by Rico
    GTX SC 2003 My mods: RRecu,Intercoolers,scat pump, riva sc impellers, racing pistons, 4inch intake, riva intake grate, riva exaust, bore throtle, racing head gasket, water box mod, rr water inlet 158g. Is pulling real hard.
    Rico, just wondering, if this is the same ski that was running with nitrous last year? are you the guy with the custom jettrim seat cover from Coamo?? which shop wrench in your ski, Julio Sea-Doo??

  8. #8
    or try to pick up a used RXP/RXT display. they will read high enough. plug and play

  9. #9
    what is rr water inlet ?

  10. #10
    Red Devil's Avatar
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    Quote Originally Posted by rotax racing
    or try to pick up a used RXP/RXT display. they will read high enough. plug and play
    Good luck finding one though....

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