 02 bung welded, ready to resume MPS tuning |
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| rfinegan |
 Dec 26 2025, 03:13 PM
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#1
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Senior Member  Group: Members Posts: 1,150 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region 
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I had a little free time to day so I decided to add(weld) the O2 bung to my Bursch exhaust
wide band O2 is now ready to go....  |
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| Ninja |
Dec 26 2025, 06:19 PM
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#2
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Member Group: Members Posts: 58 Joined: 25-September 25 From: Granbury Texas Member No.: 29,004 Region Association: Southwest Region |
Excellent spot!
The only times I've had O2 sensors screw up was at idle (as pbanders mentioned) but that was running the sensor (5 gas none the less!) at or near the tail pipe opening. The exhaust can run negative pressures and actually suck air UP the tail pipe. That muffler just past the sensor will stop that from happening! Now, ANY exhaust leak can have the same result, you just notice the dilution more at idle /low flow conditions. In my book the most important gauges to have are oil pressure, temp (for the 914 a CHT!), and the wideband. I'd fix a wideband before I fixed a tach... Even if you cannot adjust your system, you will know something is wrong! (IMG:style_emoticons/default/ninja.gif) |
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Posts in this topic
rfinegan 02 bung welded Dec 26 2025, 03:13 PM
rfinegan And Plugged when not in use...
Dec 26 2025, 03:15 PM pbanders Forgive my ignorance, but exactly what kind of tun... Dec 26 2025, 03:57 PM Ishley I also welded a wideband sensor into my Bursch. I... Dec 26 2025, 05:46 PM rfinegan Yeah, I had a leak in my MPS 2.0 diet and a new o-... Dec 26 2025, 05:47 PM
pbanders
Yeah, I had a leak in my MPS 2.0 diet and a new o... Dec 26 2025, 07:03 PM emerygt350 For tuning I found it very helpful to have a vacuu... Dec 26 2025, 07:04 PM rfinegan Seem like its leaning out under load...either MPS ... Dec 26 2025, 07:09 PM |
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