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Thread: Ecu help

  1. #1
    canadian iceman
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    Ecu help

    Just some tuning info needed...I have rxpx with sd centre stock class closed course Ecu 8650 rpm that is mapped for stock injectors...can I run et extreme charger with larger injectors...probably 50lb ..rotax rrfpr and correct afr setting and have any problems as long as it is tuned correctly??...secondly do I have to have blow off valve or not?


  2. #2
    Eric Ocman's Avatar
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    My guess is 60lb injectors with that ecu and a good rrfpr. No BOV

  3. #3
    ROTAX RACING performance
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    you can not run that ECU with a ET extrem SC the timming in the SD centre ECU is very aggresiv, you can not ad a big SC !, but SD centre also have a ECU for 60 lb Injectors and high boost.

    a ECU mapped for 42 lb will never run good with 60 lb Injectors, that would be the next issue.

  4. #4
    Eric Ocman's Avatar
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    Trade it for a Riva!

  5. #5
    canadian iceman
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    just a follow up..I talked to les cooke and i had him remap my ecu...he mentioned that me trying to get this setup to run on stock class ecu mapped for 42 with my big charger would have been impossible so to other members this is not a good thing to try...just wanted to share

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