Recent Content by derlinder

  1. derlinder
    Post

    Ultimate Racing High-flow secondary cat worth it?

    Not gonna lie I have no clue how to direct message on this forum LOL but my zip code is 94538
    Post by: derlinder, Mar 21, 2024 in forum: Mazdaspeed 3 General Discussion
  2. derlinder
    Post

    Ultimate Racing High-flow secondary cat worth it?

    Definitely interested. How much are you asking for it?
    Post by: derlinder, Mar 21, 2024 in forum: Mazdaspeed 3 General Discussion
  3. derlinder
    Post

    Ultimate Racing High-flow secondary cat worth it?

    To my knowledge, they can check if your ECU has been reflashed. If it’s not a CARB legal COBB OTS tune (which we know is garbage) then you won’t...
    Post by: derlinder, Mar 21, 2024 in forum: Mazdaspeed 3 General Discussion
  4. derlinder
    Post

    Ultimate Racing High-flow secondary cat worth it?

    Only reason I can’t go catted downpipe is because I can’t run it without a tune. Do you know what kind of HP gain you can expect from running a...
    Post by: derlinder, Mar 20, 2024 in forum: Mazdaspeed 3 General Discussion
  5. derlinder
    Thread

    Ultimate Racing High-flow secondary cat worth it?

    Hey guys, I’ll start by saying I’m located in CA so I have to be able to pass a smog check so a downpipe would be out of the question. With that...
    Thread by: derlinder, Mar 19, 2024, 8 replies, in forum: Mazdaspeed 3 General Discussion