Quote:
Originally Posted by 2015f82m4
They should be removed because that is your wide band o2 sensor reading. If you get your car tuned they need to know your afr’s for tuning. I was told to remove them after so just passing on that information to everyone!
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Quote:
Originally Posted by Adrian2877
I see, I made the mistake of selling my stock downpipes thinking I would pass because my straight piped STi passed with no issues. I guess I am forced to order some used ones off eBay.
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I was going to go this approach and just leave them on.
http://bigdaddiesgarage.com/mini-cat-cel-fix.html