Got Utec and TXS TunerPro.
I am facing install, and I wonder where shall I install the wideband O2 sensor. TunerPro manual says, it shall be before the cats. Does it mean I have to replace one of the header based stock sensors with the wideband one, or weld an extra bung on one of the cats (i.e before the actual cat)?
BTW, I have Crawford HFCs and have no plan to go with testpipes.
I am puzzled...

 

GT Motorsports welded a bung in the cat, in the portion before the actual cat part, on my car.

 

You would put the WB sensors in the exhaust in addition to the stock ones. Install right before the cats.

 

when i got high flow cats (FastIntentions), Tony put an extra bung in front of the cat material for exactly this purpose...

 

Thanks guys! Does it make any difference, whether I install it on right or left cat? Right (passenger) side may be a little closer to the ECU/Utec.
Also, where do you put the actual TunerPro box?

 

I placed it inside the hutch but i think u have the gprs screen in there...