downpipe fix

  1. K

    Single Turbo Emissions e92 n54

    Hey! I made this post to hopefully help out another single turbo n54 owner looking to pass emissions. Information on my car - 2007 335i N54 On3 single turbo kit Manzo catback exhaust E60 mix on a custom tune (jb4 + mhd bef) I am in Colorado, typically for a 2007 they would do the test on the...
    • Krivero
    • Thread
    • colorado downpipe fix dp fix e90 e92 emissions n54 single turbo
    • Replies: 1
    • Forum: E90/E91/E92/E93
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