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  1. #1
    AKA: Larry lafjax's Avatar
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    42 lb injectors & S3 SC vs fuel mileage

    Has anyone noticed a terrific decrease in mileage with the S3 SC and 42 lb injectors? I was getting about 4.5 mpg on a new 12 hour RXT and now I'm getting about 3.5 mpg...used to go 70 miles on a tank now takes about 50% more gas. (Rear 4" intake, stock prop, 66.7 at 8020)


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    Quote Originally Posted by lafjax View Post
    Has anyone noticed a terrific decrease in mileage with the S3 SC and 42 lb injectors? I was getting about 4.5 mpg on a new 12 hour RXT and now I'm getting about 3.5 mpg...used to go 70 miles on a tank now takes about 50% more gas. (Rear 4" intake, stock prop, 66.7 at 8020)
    Yeap, the same thing happened to me when i used my Riva S3 SC with the 42' lbs/hrs injectors and Rotax Racing ECU, but when i switched this set up for the Riva ECU and 50lbs/hrs injectors combo i gained more low end punch and midrange power with a "even better than stock" fuel economy @ cruising speeds did you read the info that i posted a few weeks ago in the board talking about this??

  3. #3
    AKA: Larry lafjax's Avatar
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    Quote Originally Posted by GPR/STX-15F/RXT View Post
    did you read the info that i posted a few weeks ago in the board talking about this??
    I missed seeing that thread. Could you point me to it?

    Thanks

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