WTFchuck

i was wondering where i should locate the bosch sensor for my wideband

GPTourer

I think the consensus is in the DP. If you have to put it under the car, put it above 3 or 9 o'clock, and definitely not at 6 o'clock because water can puddle up and eventually foul the sensor.

gsrboi80

iTrader: (38)

In the DP pre cat. Most WB manufacturers reccomend at lthe least 10-12in downstream from turbine.

autobahntom

iTrader: (5)

The MXP downpipe has a bung in it already for a wideband. Mine did when it came-not sure if it was supposed to or not as it is/was not advertised that way.

Evolution Z

iTrader: (2)

in the AMS dp, there are two bung holes for the wideband, each at a different angle. which one would be optimal?

Get Rad

iTrader: (5)

And if you don't have a test pipe, hfc or dp with an extra bung you will have to head to a muffler shop and have one welded in.

SilverJesterGSX

I have a speed circuit test pipe that has an extra bung for a wideband (no aftermarket dp yet). Is it better to put it closer (like in the downpipe)? Would putting it in the test pipe be too far away?

Couple of pics for reference:
pic 1
pic 2