Quote:
Originally Posted by Foobar
I'm not sure what you're trying to avoid - you're going to want to get a tune for the header anyway to maximize the benefit so that should address the ECU and CEL for you.
Are you trying to get by without a tune? If so, you'll need some kind of defouler setup to trick the o2 sensor and avoid CEL. That's a lot less involved than trying to move a cat and sensors around to another part of the exhaust system.
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I told you what I'm trying to avoid in my previous post. Another member moved his sensors around the secondary and has no cel for 5000+ miles. My only concern is the ecu messing with a/f ratio