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Thread: Missing Speed?

  1. #1

    Missing Speed?

    I have installed a s3 with rear intake,modded waterbox,thru-hull exhaust,42 lbs injectors, pir ic,water strainer, catch can,pump wedge,15/19r, noopas, an intake grate. Rpms.8050 Elev. 2550. Air temp 79, humidty 30%. Slight chop ran 72.1. Does this sound right? I developed a leak at the carbon seal, how much speed would the ring scrub off if I was leaking to the inside of the boat? Any ideas on where I am no tuned right? I think I should be around 74 or 75 with my mods. Any comments would help.thanks

  2. #2
    correction......s3 superchager

  3. #3
    beegle55's Avatar
    Join Date
    Mar 2007
    West Virginia
    My RXP will run almost 72 with a reverse bucket trim and ride plate mods, which is nothing major. I am 98% sure you should be getting around 75, but the chop might have caused the decrease. Just my opinion.

  4. #4

    Join Date
    Jun 2006
    Highland lake , CT
    Quote Originally Posted by spawn5150 View Post
    correction......s3 superchager
    i have the same mods as you / do you have a riva/ RR racing ECU?? i was on the lake yesterday and saw 8600 at 3/4 throttle at 76mph and all over the rev limiter . I Have the same 15/19r not touched and no rings in the pump. PM JERRY he will tell ya.Good luck

  5. #5
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    he's also at 2500 ft. elevation which accounts for a 2-3 mph loss compared to sea level. Regardless I'd expect to be around 75-76.

  6. #6
    stock ecu...slight chop, but still enough to be hooked up.

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