In the rear header. You still need to extend the stock o2 sensor harness
Should you buy an extension or extend it yourself? I've heard of people soldering in new wires, I've also heard that can mess up the readings from the sensor.
Got 'em installed last night!
It took me 5 hours, but it's done. One of the more difficult things I encountered was snaking the rear header into place. I ended up pulling the trans dipstick and rocking the engine as far forward as possible. They seal great with the step-down band clamps like what ZZP sells. I used the horseshoe clamps underneath, and they leak a bit, but that will be welded soon anyway. And, just because they are slip-fit headers doesn't mean that they are easy to line all three pieces up. It took a bit of work, but they fit and work great. Identical to the SSAC in the way they fit. I'm almost 100% certain they are the same thing without the badge.
Should you buy an extension or extend it yourself? I've heard of people soldering in new wires, I've also heard that can mess up the readings from the sensor.
Extending the wiring on the sensor itself can mess with the reading. As long as you extend the harness, you're fine.
How is splicing in more wire different in the resistance that it adds compared to a harness that does the exact same thing but with clip in connectors?
it isnt unless you do something stupid like changing the wire gauge considerably or adding like a mile of more wire. if you do either of those then youre already dumb.
How is splicing in more wire different in the resistance that it adds compared to a harness that does the exact same thing but with clip in connectors?
So the sensor reads through the wires it sends the signal through?
O2 sensors send a signal. This signal is changed by its changed output voltage. That means only added resistance can change the voltage.
It actually gets a sample of air though the wires, though. I know it sounds strange, but O2 sensors generate a voltage from the differential of O2 content, so it has to have both.