Re: Need help determining "correct" dimensions of DS exhaust head pipe
Hi Joe:
Yes, I thought it would be nice to be able to install a wideband oxygen sensor for tuning and diagnostics. From what I have read, a wideband oxygen sensor can provide some very useful insight for tuning.
As I understand it, the conventional oxygen sensor used in most modern cars has a simple "binary" output; it only tells you whether the air/fuel ratio is above or below the ideal value. This is fine for computer-controlled fuel injection systems that only need to know which direction to tweak the injector duty cycle, but it doesn't provide much insight into what the actual air/fuel ratio is.
On the other hand, a wideband oxygen sensor reports the actual air/fuel ratio in real time. This is what dyno tuners use. You can use this information to evaluate how well the carb is optimized for various speeds and load conditions. To me, this seems like a big step up from trying to "read the plugs" the way I did 30 years ago.
In fact, when combined with a couple other sensors for engine speed and vehicle speed, it is (theoretically) possible to do the same kind of tuning that can be done with a chassis dyno. I think it might be fun to give this a try.
BTW, I have tried to "hide" the oxygen sensor ports on the top side of the exhaust pipes, next to the transmission. They aren't really visible unless the car is on a lift. So you see, I'm still trying to maintain "correct" appearance with a car that is becoming increasingly incorrect!
Hi Joe:
Yes, I thought it would be nice to be able to install a wideband oxygen sensor for tuning and diagnostics. From what I have read, a wideband oxygen sensor can provide some very useful insight for tuning.
As I understand it, the conventional oxygen sensor used in most modern cars has a simple "binary" output; it only tells you whether the air/fuel ratio is above or below the ideal value. This is fine for computer-controlled fuel injection systems that only need to know which direction to tweak the injector duty cycle, but it doesn't provide much insight into what the actual air/fuel ratio is.
On the other hand, a wideband oxygen sensor reports the actual air/fuel ratio in real time. This is what dyno tuners use. You can use this information to evaluate how well the carb is optimized for various speeds and load conditions. To me, this seems like a big step up from trying to "read the plugs" the way I did 30 years ago.
In fact, when combined with a couple other sensors for engine speed and vehicle speed, it is (theoretically) possible to do the same kind of tuning that can be done with a chassis dyno. I think it might be fun to give this a try.
BTW, I have tried to "hide" the oxygen sensor ports on the top side of the exhaust pipes, next to the transmission. They aren't really visible unless the car is on a lift. So you see, I'm still trying to maintain "correct" appearance with a car that is becoming increasingly incorrect!
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