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  1. #1
    Syuhas85's Avatar
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    Question Do I need A Tune with 137mm+4 SC Wheel?????? RXPX 260

    Long Story short my Supercharger Blew on my 2012 Rxpx 260 the wheel was destroyed!!!

    So I had it rebuilt with 137+4 Wheel, I also installed the Riva Rising rate fuel pressure regulator ( I DID NOT* know what to set it up as static or rising rate so i set it up as rising rate @ 58lbs which is probably wrong!?!) any help there would be gracious.

    Anyhow I was told I need a tune or it will fry the motor because the injectors can not push enough for the wheel?!?! is this true does anyone have any insight. I was planning on getting a tune this coming year as I dumped a ton in just getting it back up and running again but ill do whatever needs to.

    Also does anyone recommend any certain company for tunes?

    My current mods:
    *SoCom
    *Air Intake
    *Free Flow Exhaust
    *Catch Can / Breather
    *Rebuilt Upgraded S.C 137+4 (13.7PSI @ 8100RPM 15.2PSI @ 8,500RPM)
    *Riva Rising Rate Fuel Regulator
    *Solas Concord 15/21 Impeller


    Last edited by Syuhas85; 05-31-2020 at 11:13 PM.

  2. #2

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    You do need a tune , Riva is way to go . If you want to be safe , you need more supporting mods , Bosh VT 11 fuel injectors , valve retainer kit, IMUK, 160F t-stat .I would also get exhaust manifold drilled and tapped for 02 sensor to verified AFR's . You can purchased Maptuner X and tune license from forum store and tune/ flash ecu yourself.

  3. #3

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    Are U using oem intercooler ? If yes I would switch to Fizzle IC.

  4. #4

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    You were correct with fuel pressure regulator.

  5. #5
    Syuhas85's Avatar
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    Quote Originally Posted by mario View Post
    You were correct with fuel pressure regulator.

    Thanks Mario,
    I sent the ECU out for Flash, Thats being done I Left the RRFPR as Rising Rate @ 60lbs (don't know if that needs to be bumped down or not but will work on that later)... I have an AFR on the way but not I have ran into a Injector problem lol my Bosch Ev14's fit good and i have the adapters for them but they are short tipped not long tipped


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