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Message: <blockquote data-quote="Chevy2005" data-source="post: 22407" data-attributes="member: 12149"><p>So I have longtube headers and yes on those headers there is a o2 sensor, then it goes to a x pipe and has true duals going all the way back. The more I look at it the more I think it may be that exhaust leak. Because the driver side o2 sensor is much further away from the exhaust leak than the passenger. That would explain why I have bad ltft on bank 2 because there is not much back pressure. The x pipe has a crack all the way around and It definitely leaks pretty bad. So I’ll probably start by fixing that.</p></blockquote><p></p>