AEM Wideband ( Were is the best place to weld the 02 Bung? ) + A/f Ratio Q?

[The All Mighty KA-T]

ok.....i'm getting ready to tune, and i just bought a AEM wideband, and i'm needing to know what part of the Downpipe i need to weld the bung so i can get the best A/F ratios, And what a/f ratios do i need to habe at WOT and at ideal? thanks guys

[KATwo40]

Mount the WBO2 sensor on the bottom most area of the downpipe, almost right at the catalytic converter. If the sensor is too far up, it will be overheated and give false readings (shows richer than actual).

Because you're running a T25, you'll experience high intake temps, high exhaust temps and very high exhaust manifold pressures. I'd say to help combat these issues, shoot for an AFR @ WOT around 11.5-11.8:1. I wouldn't go over 12:1 for these reasons, since you don't have any timing control.

[Florida240sx]

On my directions from my wideband it said 8-12 inches away from turbo on top of the downpipe.....

[KATwo40]

It's a heated unit and it's been my experience that when overheated, they read too rich. Especially the Innovative units. Maybe the AEM unit is different.

[PhopsonNY]

AEM says 36" from the turbo

[midwestnissans]

36" if you plan on running high compression, boost, or leaded fuel and im sure you plan on doing at least one of the so yeah at least 36 inches but DO NOT put it after the cat

[steve s14]

i put mine at the lower portion of the downpipe as well. on mine, there isn't that much room anywhere else except for that area and i wanted to locate it as close to 12:00 on the tube as possible.

[darkforcejackal]

Dude that picture is very helpful, thanks!

I'll be installing one of these as well, and indeed they do recommend farther as better, ideally 36 inches as mentioned.

And, The All Mighty KA-T, you should sign up here and have a look around!http://forum.aempower.com/forum/index.php

[fiznat]

When I was installing my wideband plug, I was given the advice that the plug should never be at direct 6:00 or 12:00 on the pipe (straight up or down) because it allows water to settle in the sensor. Along the side of the pipe, like steve s14 has it, is supposedly ideal. That length from the turbo is fine, also.

[Jookmasta]

i have mine mounted 16 inches from the turbo and at 12:00 but i am running a zeitronix so i know that they dont want sensor mounted too far.............as per the directions that is

[Florida240sx]

For my lc-a they said to be at 10 or 2 o clock I have it liek 18" from my turbo on the bend of my downpipe.