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  1. #1
    GarageX's Avatar
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    48 Bosch injectors with Riva ECU

    Will the 48# bosch injectors run ok with the riva ECU? I know it is mapped for riva 50's.I already have the injectors and riva rrfpr. I plan on doing the valve train upgrade and propping for 8600. Which retainers or valve springs are the best for this rpm, Riva or Les Cooke. I have an X charger and plan on Riva XX or ET wheel.


  2. #2
    A smart admits!A wicked excuses!An idiot insists! mitsakosgt's Avatar
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    You will be fine with the bosch injectors!
    I run the RIVA valvetrain upgrade with no problem,even with the xx charger.

  3. #3
    Eric Ocman's Avatar
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    They work great together.

  4. #4

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    les cookes are the lightest on the market i have weight them all

  5. #5
    Eastside Powersports Slow 91's Avatar
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    i put bosch 48's in my ski with a riva ecu, took out the Riva 50's. I didnt get to ride it that way, but i thought the ski idled cleaner with the 48's.

  6. #6
    Eric Ocman's Avatar
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    Quote Originally Posted by Slow 91 View Post
    i put bosch 48's in my ski with a riva ecu, took out the Riva 50's. I didnt get to ride it that way, but i thought the ski idled cleaner with the 48's.
    You still have the 48's? I need to borrow them.

  7. #7
    GarageX's Avatar
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    Quote Originally Posted by trent_girardrxp View Post
    les cookes are the lightest on the market i have weight them all
    I may just go with riva's valve train upgrade since it's comes as a complete kit.Where do you find Les Cookes parts? Whats a good starting point for fuel pressure on Riva's rrfpr and what afr ratio should I shoot for on an afr innovate gauge?

  8. #8
    monaroman76's Avatar
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    Quote Originally Posted by GarageX View Post
    I may just go with riva's valve train upgrade since it's comes as a complete kit.Where do you find Les Cookes parts? Whats a good starting point for fuel pressure on Riva's rrfpr and what afr ratio should I shoot for on an afr innovate gauge?
    Les Cookes store is SeadooCentre.com in Qld, Australia. Your desired range for AFR is 11.7-11.9

  9. #9
    GarageX's Avatar
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    Quote Originally Posted by monaroman76 View Post
    Les Cookes store is SeadooCentre.com in Qld, Australia. Your desired range for AFR is 11.7-11.9
    Thanks for the info!

  10. #10
    MacDaddy_rxpx's Avatar
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    I'll be testing/tuning my 48s/Riva ECU combo once it starts warming up here in Michigan. Calling for 1-3 inches of snow today.....WTF.

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