RomRaider

Hello guys.

My car (2013 sti) is currently tuned with a decat downpipe, however it’s a v-band setup that I can easily switch the decat part to a cat. I was wondering, in theory, what would I have to change in my current ROM when switching to catted setup?
I haven’t hade the opportunity to do som logging, maybe it’s impossible for you to answer without seeing the logs but I thought I’d throw the question out here.

depends a little on how much boost you're running and what fuel your on. most likely changes would be to boost control and ignition timing as well as re-enabling the rear o2 to monitor the cat is working.