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Thread: Rossion Dyno Tuning

  1. #1
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    Rossion Dyno Tuning

    We've been getting more calls for Rossion work and car sales.
    Lots of questions regarding tuning and upgrades.

    I know I posted this on another thread, but wanted to explain the graphs in a separate thread.

    The dyno chart below are all Rossion Q1.
    Green is stock.
    Red is a reflash. However, there is break-up from 6000 rpm to redline.
    Blue is a combination of flash, valve train and electronics.

    The graph below represents the air/fuel ratios on a wide open run.
    The green line (stock) has an average a/f ratio of 13+. A bit lean.
    The red line (flash) is about 11.5+.
    The Blue Line (valves train, flash and electronics) is about 12.

    It's easy to tell that the blue line runs a lot smoother throughout the rpm and makes some good power.



    rossiondyno.jpg
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  2. #2
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    Rossion Cars claims 450 HP @6500 rpm and 390 T @ 5000 rpm stock flywheel numbers. The graph of stock to the wheels is 404 HP @6000 rpm and 391 T @ 5000 rpm.
    My question is Do you think the Rossion Car engine performance numbers are correct? I mean top HP at 6500 rpm? And isn't the stock 390 T too low if they state 390 T at the flywheel?

  3. #3
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    Quote Originally Posted by wormman View Post
    Rossion Cars claims 450 HP @6500 rpm and 390 T @ 5000 rpm stock flywheel numbers. The graph of stock to the wheels is 404 HP @6000 rpm and 391 T @ 5000 rpm. My question is Do you think the Rossion Car engine performance numbers are correct? I mean top HP at 6500 rpm? And isn't the stock 390 T too low if they state 390 T at the flywheel?
    the drivetrains have more than 20% drivetrain loss.
    If Rossion advertises 450hp, 390whp on our dyno would be above their claims.
    SCCA National Runoffs GT-1 Bronze Medal
    SCCA GT-1 Divisional Champion

    Noble Automotive USA (TurboHoses Company)

    Noble M12/M400
    Hoover@nobleautomotive.com
    925 -455-1066

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