02 censor placement

[ElantraEvo]

im gettin ready to install my turbo set up but need the censor bungs, will any muffler shop no exactly what size and stuff i need? or can any 1 tell me the the one i need. and once i put it all on were is the best place to mount them? i hear the first censor will fail if too close to the turbo, and the second i assume will be fine in the same place..

[OH_Beta_Accent]

The first O2 sensor should be no closer than 6 inches from the point that the downpipe bolts to the turbo.

[KeWLKaT]

why not put the first sensor before the turbo? I had it set up that way and it worked very well.

[OH_Beta_Accent]

It'll work fine upstream from the turbo. It'll just fail prematurely from excess heat and backpressure. There is a massive heat and pressure drop after the turbo so the O2 will live longer there.

[only1db]

no to mention it will read all four cylinders.