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reduce

  1. L

    does coring the 04 reduce back pressure?

    hi on the 04+ coring the exhaust to 2.5inch as shown in the how to isn't that a bit too big? would having such a huge ID had adverse effects to the performance? cheers MAtt
    • llamamoo
    • Thread
    • 04 back coring pressure reduce
    • Replies: 9
    • Forum: Aprilia RSVR