vasman

Well according to aeroforce you do not need to open necessarily a 3rd hole. You can plug it in one of your rear O2 sensors:

Most people replace a rear sensor with the wideband. The rears can be turned off easily in software so as to not throw a code. I would not replace a front sensor, you need them for closed loop operation. Optionally, install a third bung for the wideband. Concensus is, and what I've found, is that the rear position when using cats reads about 0.1 A/F leaner than actual at WOT.

Todd

The problem is with the rear O2 off I cannot pass emissions here in Houston, so third hole it is...

shanec

My Aeroforce and their wideband arrived today. Their instructions say to up the bung 18 inches from the engine. Now that's not real practical with longtube headers. But is a far cry from the rear O2's.

VistaGT

If you've got a tune just replace the rear o2 with the wideband...the rear sensors will be turned off anyway. I have the same kit

vasman

I got a tune with O2's specifically on. (just passed inspection with it).

VistaGT

So turn 'em off then lol

socalwrench

You want the wideband as close to the collector as possible. I would put it 3-4" behind the collector. That should give you an accurate reading from all the cylinders on each bank.