Just Floor It

OK, Im looking in the FAR future to do an ls1 swap in my third gen...I heard that you only need 2 out of 4 o2 sensors? Can someone help be understand this? Also, what are O2 bungs? Do you have to have these too? Im confused about all this stuff...

Thanks:cheers

blkZ28spt

The first two O2 sensors are what the computer uses for the air/fuel ratio, etc. The second pair of O2 sensors is only to monitor the cats and make sure they are functioning. You can run without cats and not throw an engine light (and still pass OBDII plug in emissions tests) if you put O2 sims on (~$80 a pair) or get it tuned with LS1 Edit to remove the code. Um, I htink that O2 bungs are just the little holes in the exhaust that you thread the O2 sensors into......

Edited to replace the word 'sims' with the 'sensors'........should reread all my posts for stupid mistakes like that!

VIP1

O2, not O2 sim (sim = simulator)

Correct.

blkZ28spt

OOOOPPSS. should have reread my post.........i must have been thinking ahead of myself.....