New exhaust, O2 sensors are too big?
#1
New exhaust, O2 sensors are too big?
Hey all hoping for a little help here. I have a 2007 Dyna Super Glide Custom (FXDC), 96ci TC. It had Screaming Eagle exhaust which was fine but too quiet and not the look I am after (long, chrome)! I bought a set of V&H Short Shots and was to the point of setting the new pipes in (new gaskets, bracket installed, etc.) And went to put the O2 sensor in the bung and wouldn't you know it, it doesn't fit...not even close. The O2 sensor on the bike was a 22mm (wrench size I used, cannot read the tiny *** print on the sensor to know the part number) but it is so big the sensor tip won't go in the new pipe bung hole. It is very clear the sensor size is wrong (for the new pipes) so I am not sure what to do here, run no sensors (doesn't feel right to do that, and I expect it would throw a code) or do I just need to get new sensors to fit the smaller bung hole (is that even possible?)
I'll also mention I said bung hole 2 times without making even one Beavis and Butthead type joke, my inner 13yo is having a tough time holding back...
Thanks for your assist on this!
I'll also mention I said bung hole 2 times without making even one Beavis and Butthead type joke, my inner 13yo is having a tough time holding back...
Thanks for your assist on this!
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Last edited by HotRodJPod; 03-13-2021 at 08:39 PM.
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#9
Does anyone know if it is possible to run without O2 for a while without harming the motor? Trying to figure my long and short-term options. The pipes were used and advertised as the correct fitment for the year, clearly, that was wrong, though they do physically fit the bike. I would need to plug the bungholes for now and disconnect the sensors until I get new pipes direct from the manufacturer. I would try to tap the bungs but the recess in the pipe for the sensor doesn't have the room (from the look of it) for the 22mm hex to even fit.
#10
I don't think the ECM will work correctly without the O2 sensor input. The air/fuel mixture is controlled by the ECM. Welding in new correctly sized bungs is probably the easiest fix, other than buying another set of pipes. Would be a simple job for a good welder. Probably not what you want to hear, I know. I don't see another option but maybe someone else has an idea. Good luck 🤞