• Richard P Prussman Jr.

    classing a modified 2017 STI

    This is a discussion I started with a friend over my modified 2017 Subaru STI. The list of mods are down below. I went the through the rules and internet and have concluded that I'm probably ASP. However, there is this in ASP: Impreza WRX (incl. STI) (2015-16) I have a 2017. No other SP's state a 2017 STI except in FSP it says Subaru Turbo 4WD (all, NOC). To me, this means FSP for me. However in spirit of sportsmanship - ASP is more for my car. I'm not a national competitor and don't see where I'd be going to anything more than local events in SV and maybe Marana.

    This could be a killer advantage for me. On a 30 second course it's seriously to my benefit to take advantage of this rule.

    ASP: .849 = 25.47
    SM: .854 = 25.62
    FSP: .823 = 24.69

    I also only found that using flex fuels of more than 15% ethanol are banned in only Stock and Street Touring classes. Can anybody speak to this as well ?
    This is the list of modifications to my car:

    1st round
    Invidia Downpipe, catted, with divorced wastegate. The wastegate is stock, the downpipe has a bell mouth with a seperator.
    Invidia Dual N1 exhaust
    Accessport V3 tuner
    Grimmspeed TMIC rated to around 500hp
    Grimmspeed TMIC splitter
    Cobb SF+ short ram cold air intake
    Turbosmart dual port BOV
    Work Emotion 11r 18x95 +38
    Azenis RT615K+ 265/35 preheated
    Rally Armor UR Mudflaps
    Rallitek skidplate



    2nd Round
    Autopower 4pt Race Rollbar with diagonal and harness bars
    COBB tuning flex fuel kit
    Subaru Fuel Rails STI 2008-2017
    Subaru Fuel Rail Line Kit STI 2008-2017
    Subaru Fuel Pressure Regulator for Fuel Rail Kit STI 2008-2017
    Subaru Top Feed 1050x Fuel Injectors
    AEM High Flow Fuel Pump 05-09 LGT, 08-14 WRX, 08-17 STI
    IAG Performance Competition Series Air / Oil Separator (AOS)
    COBB Tuning 3-Port Boost Control Solenoid
    CSF Racing Performance Aluminum Radiator
    COBB Tuning Silicone Radiator Hoses
    Perrin Oil Cooler Kit
    ACT Heavy Duty Performance Street Disc Clutch Kit
    Subaru OEM STI Flywheel
    Pro Tune 91-E85 ECU Diagnostic and Calibration Flex Fuel Calibration


    Summary
    1. What class am I
    2. I'm tuned to run any combination of Ethanol from 10% to 85%... is this legal in SP? If not, am I then SM ?

    Thank you.
    -ric

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