Currently running Milltek's non resonated catback with a valve, but I'm looking at going catless. Does anyone have an experience doing something similar? I'm particularly worried about drone, WOT volume doesn't concern me. A buddy of mine completely got rid of the drone in his Focus ST by going...
Check out some more information regarding our up and coming downpipe for the 1.5L turbo Civics. Let us know what you think.
https://www.27won.com/blog/downpipe-design-blog-part-2