With any turbo motor an exhaust leak will hurt performance if it's before the turbo. That part is obvious to me. On a n/a motor an exhaust leak will have absolutely no negative effect if it's after the o2 sensor, other than the always debated back pressure, which is well beyond my level of understanding for now.
Let's say the leak is before the o2 sensor. My way of thinking is that it can't make the car run any worse. This is the way I see it, if there is a leak the mixture is going out of the leak evenly. So the o2 sensor would see no change and could not compansate. Because it would not see a lean mixture, so it would not try to richen up the mixture. The only change would be there is a lesser amount of exhaust passing by the o2 sensor.
The only way I see a way for the o2 sensor to detect a lean condition is if the leak is acting like a vacuum pulling in more oxygen. Can an exhaust leak do this?
Help me out here. Me and another guy are having an argument over this and it's got me wondering if what I have been taught is wrong.
Let's say the leak is before the o2 sensor. My way of thinking is that it can't make the car run any worse. This is the way I see it, if there is a leak the mixture is going out of the leak evenly. So the o2 sensor would see no change and could not compansate. Because it would not see a lean mixture, so it would not try to richen up the mixture. The only change would be there is a lesser amount of exhaust passing by the o2 sensor.
The only way I see a way for the o2 sensor to detect a lean condition is if the leak is acting like a vacuum pulling in more oxygen. Can an exhaust leak do this?
Help me out here. Me and another guy are having an argument over this and it's got me wondering if what I have been taught is wrong.
