Mechanical o2 Fix
 

This is how to make a mechanical o2 fix if you have a test pipe/resonator/high flow cat, that gives a cel. You can find it on ebay for about 15 dollars shipped. But why buy it when you can make it for 3 dollars using parts from your local Pep Boys?

First of all you will need 2 spark plug anti-foulers (18mm). It is made by the HELP! brand part#42002 or 42009.
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You will also need a 1/2" drill bit and drill. Or a drill bit close to that size
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Drill one one the anti-foulers so that the o2 sensor can fit. I recommend using a vise grip and lube for the drill bit if you ever plan on using it again.
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This is how the hole should look after. If it doesn't come out nice use a dremel or a file.
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Put the one anti-fouler you drilled and connect it on top of the one you didn't. Now you don't have to buy a electrical fix and splice your wires.

Here it is installed. I recommend using anti seize on all treads.
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Here is one I tried and gave up on.
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