bigredexpress99

iTrader: (15)

mount it before the cat definetely because another form of combustion goes on inside the cat as well, so that would skew your readings. As for someone with true duals, I would put it just after your collector, on either side. A better choice would be to have an x-pipe put in and put it there, but you shouldn't run into any problems "tuning off of one bank". Just watch both your primary O2's to make sure they are readin about the same so you know the 2 banks are about as equally efficient.

1slow01Z71

iTrader: (36)

I have an x-pipe so I should just drill a hole where the two pipes cross and weld the bung in there?

bigredexpress99

iTrader: (15)

how far back from the collectors is the x pipe? up to a foot or two should be ok, thats where ya should do it.

bigredexpress99

iTrader: (15)

I didnt see you had an xpipe in your sig.........now I know to look first.

1slow01Z71

iTrader: (36)

Once the lts are on the x-pipe will be about a foot and half from the pass side and probably 3 feet from the drivers side since that pipe has to come across under the tranny.

bigredexpress99

iTrader: (15)

you should be good there!!! Have fun!

1slow01Z71

iTrader: (36)

thanks bigred.

bigredexpress99

iTrader: (15)

no problem man, glad to help out!

DrX

iTrader: (7)

Just received my Dynojet Wideband Commander from RWTD(they had a good sale price recently). Instructions say before the cats no more than 30 inches from exhaust port. Mount between 9 and 3 o'clock positions at least 10 degrees above horizontal to prevent water accumulation/damage to the sensor.

1slow01Z71

iTrader: (36)

I dont have cats on my truck so thats not a problem but the less then 30 inches from the exhaust port will mean I will have to moun it on one bank or the other.