| Author | Message | ||
     Cowtown |
I’d like to start a discussion on relocating the O2 Sensor. I think I read the O2 Sensor is located on the rear header because it runs leaner. Would there be any advantage, disadvantage or no difference in relocating the O2 Sensor to the collector pipe. | ||
| New12r |
Other than the fact it would be ugly as hell? It would give the ECM that was designed for it to be at the rear cly info that was incorrect based on the ECM's program. | ||
| Cowtown |
So when the ECM adjusts the fuel mixture, it compensates the mixture to the front cylinder based on the data it receives from the rear cylinder. Makes sense. Anymore discussion? | ||
| Id073897 |
it compensates the mixture to the front cylinder No. How? | ||
| Kowpow225 |
I'd be interested to see some ideas. First, the o2 sensor would take more time to heat up being located further from the source of heat. Therefore your ECM wouldn't recieve a reading until later than the original programming accounted for. Second you'd HAVE to do some (or a lot of) remapping so your cylinders wouldn't be completely out of adjustment (lean or rich). But if both of those were sorted, I'd like to see some dynos. But truthfully, if horsepower were the reason for this endeavor, having it DL tuned would be far more productive. What do you want to accomplish by this mod? | ||
| Cowtown |
Id, if your asking me, I don't know. Not to put words in his mouth, I was just trying to surmise what New12r was stating. Kowpow, 1st I was thinking of using a heated O2 sensor. 2nd I think you're restating what New12r stated. I was just wondering if there could be any advantages to the relocation, I don't think anything you do with an O2 sensor would increase HP, but I could be wrong. | ||
| Cowtown |
I had a heated O2 sensor on my 2001 X1 which was very cold natured. It made a huge difference in warming it up, I'm assuming by leaning it out sooner. The XB doesn't have the same cold nature as the tuber, so I was wondering if a relocation could have an advantage. | ||
| Glitch |
Well, since the ECM is configured for the O2 sensor to be where it is, I don't see how moving it would help anything at all. | ||
| Billybob |
sportster has a 02 sensor for both cyls is it's ecm different | ||
| Id073897 |
Well, since the ECM is configured for the O2 sensor to be where it is, I don't see how moving it would help anything at all. And even if, this doesn't solve the basic problem: both cylinders get their fuel adjusted based on the exhaust gas taken from one. |
