wideband location on turbo car

[iGoRa]

I want to have my WB installed permanently.
With the same tune:
First I had my LC1 installed in pass manifold. Worked great on the cold car and was throwing Error8 (overheating error) if I would turn off the car and have it on again. With the fear of damaging the sensor, moved it way back.
Installed it in S-pipe(past cat,my cat was empty) Same error and my tune was off(in first location I had my AFR followed commanded , in second – it followed but advanced in time, I think because now gases where traveling much further to reach WB)
So, in first location I were getting immediate response=better tune. Error code remained. Still too hot? The Volkswagen O2 sensor is installed right in the manifold on all VWs and works no problem, that’s why I don’t think that temperature damages the sensor, more like error8 is a nature of LC1 controller. Opinions?

Now, what should I do on the turbo setup? At this point it doesn’t matter for me where to weld o2 bung.

1. Leave the sensor in the manifold
2. Install o2 bung right in the Y
3. first turn of the turbo down pipe
4. as far as possible, before the cat inv

[cpelton]

i believe the best spot is 24" downstream from the turbo

[S2H]

anywhere that it doesnt get too hot and as close to the engine as possible is ideal...
you can also go buy a piece from innovate motorsports..HBX-1 heat bung extender.its like $80 US....its a must have for a Forced induction Project
helps keep the temps on your wideband cool enough to not burn it out

also it needs to be in the collector and not in a primary..usually just a few inches past where the primaries all merge together works well if you can beat the heat

[12secSS]

After the turbo is best, as pressure (between the cylinder head and turbo) will alter the readings from the wideband.

[EC_Tune]

^^^ Like he said...
You don't want to place a wideband ahead of the turbo. PLX (WB Mfg.) goes into details as to why you don't want to do that.

[iGoRa]

Thank you guys I almoust got it installed 8" away from the turbo, Now will move it all the way down.
HBX-1 - is it just like a little piece of tube that goesh between O2 and pipe?
Ive planed to make Copper heat sink. Wounder if that would be enough?

[S2H]

Thank you guys I almoust got it installed 8" away from the turbo, Now will move it all the way down.
HBX-1 - is it just like a little piece of tube that goesh between O2 and pipe?
Ive planed to make Copper heat sink. Wounder if that would be enough?

I've tried copper heat sinks...and I even have problems on NA cars with catalytic converters....which is why I suggest the HBX1....its a little more than as you call it a "little piece of tube that goes between O2 and pipe"

its pretty well designed and is a far better heat sink than just a few pieces of copper