dp exhaust stockdp gutted cat

  1. King Crow
    Thread

    Stock downpipe cat removal

    Hey guys. I’m looking for any info on either gains or exhaust note changes when gutting the cats from the stock dp. I have an ots freektune on the...
    Thread by: King Crow, May 22, 2022, 11 replies, in forum: Mazdaspeed 3/6 Engine
Showing results 1 to 1 of 1