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Thread: Catalyst and O2 monitor incomplete

  1. #1
    Potential Tuner
    Join Date
    Sep 2013
    Posts
    1

    Catalyst and O2 monitor incomplete

    Needed to pass emissions last month. I have a ZZP catted downpipe (j hook O2 bung), K&N drop in- ZZP intake tube- and 21psi Trifecta/HP combo tune done last year.

    I have done the GM driving cycle numerous times and no matter what the catalyst monitor, and the O2 monitor are incomplete. Only need to get one monitor to run to pass emmisions. Anyone have the same problem. I'm almost sure a problem lies in the tune but since I am not the tuner and I am having trouble contacting my tuner, I'm at a standstill. Is the Trifecta/HP tune normally locked? Looking for anyway to get one monitor to run. Will installing the stock DP solve one? Thanks

  2. #2
    Senior Tuner Iam Broke's Avatar
    Join Date
    Jul 2009
    Posts
    2,305
    If someone used a mix & match OS in your custom tune it may be inaccessible for you to modify. I know a few tuners that did this. The normal TF/HPT layer tune should be changable with HPT. As far as your readiness monitors, IDK. Just drive, drive & drive between 1/4 & 3/4 tank.
    '12 Camaro T3 2SS/RS LS3 M6, SLP TVS 2300, Flex Fuel