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  1. #1
    Vern's Avatar
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    RR ECU and 42s runs rich?

    I have a friend who is running the RR ECU and 42lb injectors, Riva IC, Green wheel and is very rich down low ... is that common, or?? His ski loads up really bad and takes quite awhile to clear out. Do most people run 42s, or do you have to run stock injectors and a RRFPR, or??


  2. #2
    HORSEPOWER JUNKIE 9secZO6's Avatar
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    somethings not right....are u SURE those are 42?

  3. #3
    Vern's Avatar
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    Good question, but I think so. I have 42s that I can swap with him too, but these are the same 42s he ran with the stock ECU stage 2+ setup and he and I both ran 77 mph then. The rich condition started when he switched to the RR ECU from the stock ECU so I wondered what injectors most people ran with the RR ECU ...

    Forgot to mention it runs good on top, turns about 8400 rpms, so it is just down low that it seems to load up and takes quite awhile to clear out. I did not know what injectors most people ran with the RR ECU and 10 lbs boost.
    Last edited by Vern; 07-10-2008 at 09:43 AM. Reason: added

  4. #4
    Vern's Avatar
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    Just to finish this off in case anyone else runs into this ... swapping out the spark plugs seems to have fixed it. Densos with less than 50 hours, but one was not working well ... new plugs, runs great now.

  5. #5
    Moderator Snoman's Avatar
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    I had the same problem this year with my densos..BUT i am still running the stock ECU..Changed out the plugs and she came to life...

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