hey i got the code P0420 yesterday. i have a grimmspeed gesi downpipe, and i know thats the issue, im just curious if its fine to drive with the code cleared for a couple weeks until it gets pro tuned which i hope will solve the problem
A a5m · Registered 2010 Subaru WRX Limited Hatchback 5MT Joined Nov 6, 2020 · 1,004 Posts #3 · May 7, 2023 View full thread The irony of your username...