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  1. #1
    Veteran Member Four Rings texasboy21's Avatar
    Join Date
    Apr 01 2007
    AZ Member #
    16891
    My Garage
    1983 Chevy Silverado
    Location
    houston texas

    test pipe/cat combo

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    now this is simply an idea i had so hear me out. What if i remove the cat and add in a test pipe and a good downpipe (better sound, spool, performance etc.), then at the downward slope of the dp add in some sort of cutout (straight piped, who in texas doesnt love stright pipes lol), then right where the cat levels out under the car rig up a cat with all 02 sensors (with extended wiring) and such so itll pass inspection and not kill the earth 24-7???

    so to recap: turbo-test pipe- cut out OR cat to the rear tips

    Any problems for seen with this??

    barrett
    2019 SQ5 Prestige
    2016 S3 Prestige - Eurodyne Maestro ECU + TCU, REVO downpipe, air box mods, Bilstein B12 w/ EuroSport camber kit, 034 RCO + RSB
    2005.5 A4 2.0t "Stage 3" - Pag Parts rods/inlet pipe/FMIC/manifold/downpipe + Borg Warner EFR 6758 + Stasis cup kit + StopTech 332mm BBK + Eurodyne Maestro + Eurodyne Boost Manager Plus

  2. #2
    Veteran Member Four Rings widgget's Avatar
    Join Date
    Dec 18 2007
    AZ Member #
    23464
    Location
    nj

    Re: test pipe/cat combo

    don't see why not, most cars have the cat past the DP, don't know why Audi chose this setup over the other.

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