b52hDUNN

iTrader: (1)

I have purchased a innovate wideband gauge and was wondering where I should weld in the o2 sensor bung. Innovate manual says to install it before the cat and thats about it. I have read that several people install it on their s pipe but that is for turbo. I still have the oem header with cat.

Should I weld the bung on the header where the first oem o2 sensor is, if so should I weld it on a different cyclinder?
OR
Should I just weld the bung in the s pipe?

THANKS!!

Ace83

iTrader: (6)

you can install it close to your oem O2 sensor or like what innovate manual says.. you should be good anywhere before the cat

Thorium06

iTrader: (5)

what would be the possible disadvantages of having it after the primary cat? does it just not give as good of a reading?

b52hDUNN

iTrader: (1)

I got the same question!

Thorium06

iTrader: (5)

yeah i have just been running mine in place of my secondary o2 sensor, it seems to read fine, but i have a bung i was going to put in soon, so if it makes a difference i wont weld it to the s-pipe like my original intention

b52hDUNN

iTrader: (1)

any other thoughts out there?

Blue_TC_Man

I mean a cat cleans emissions thats the purpose of it. If you put it after the cat it will not give an accurate reading as a lot of the burnt fuel fumes it reads have been removed

Thorium06

iTrader: (5)

well that complicates things for using the oem header, there doesnt seem to be much room above the cat

Blue_TC_Man

dont use the OEM header?? or just install the bung under the primary theres room

b52hDUNN

iTrader: (1)

I wanted to stay with the oem header. ^may just put it in that location.

Thorium06

iTrader: (5)

yeah i wanted to stay with the oem header too, as im really close to the sound limits for the events i run, plus i like the sound of it now. il probably just keep it in the secondary bung, it seems to get a decent signal, i never thought twice about it until now

b52hDUNN

iTrader: (1)

^ dang. now I can decide... the header will be a pain and the s pipe will be much easier. may just weld it in the s pipe since it is working out for Thorium06.

Blue_TC_Man

I mean its not really a big deal, but it will be a slightly different reading

b52hDUNN

iTrader: (1)

^ I'm assuming you are guessing that it may be a different reading. Guess the only way to tell is to try out both locations.

Blue_TC_Man

I mean it will be different as cars clean the emissions, how big of a difference, IDK the cat on the header is a precat so it is just an extra cleaning unit, so I dont know how much it actually filters

b52hDUNN

iTrader: (1)

any other ideas?

b52hDUNN

iTrader: (1)

o2 sensor bung welded to the s pipe in front of the oem o2 sensor. Getting good numbers!

Thorium06

iTrader: (5)

what are you picking up at idle?

b52hDUNN

iTrader: (1)

Idle 15.3
partial throttle 14.5
3/4 throttle 12.0
full 10.2

Thorium06

iTrader: (5)

cool that what i usually get too, exept it seems you run very rich at full throttle, i have it tuned to be around 12.3 and tail down to 11.9 towards the top when i reach 8-10psi