z2fast8

ok apperently my 99 m6 camaro when it had the off road y installed the previous owner did'nt think it was important to have the passenger side 02 sensor put back on. so my question is since the car has been tuned with no o2 on that side will i have to get it tuned again after i weld in a new 02 bung and install the new 02 sensor i have. o and the car ran good a slight miss in the low rpms but nothing bad.

sreve

iTrader: (3)

they had an open loop speed density tune in it. and if you had it retuned with inop. 02s then thats what you have. it will have to be retuned to return to closed loop fuel control.

z2fast8

damn.

z2fast8

but y would the leave the driver side in??? so is it better to leave it out?
?

z2fast8

anyone have any ideas or seen this b4?? sould i weld in a bung and install the passenger side or should i just leave it out. it still throws the ses light for it if that matters

sixvi6-camaro

iTrader: (9)

There are 4 O2 on an F body.. 2 Front O2's which are located before the Cats or on the manifold or header collectors are needed for Closed loop operation or else it will stay in open loop and probably run like crap.

Rear O2, which are after the Cats and on the y pipe farther back, only monitor the function of the Cats to tell the PCM when one is going bad.

which is missing front or rear?

Its common to remove the rear O2s as they have no bearing on how the engine is running and can be tuned out. front O2's though are needed for fueling in Closed loop.

joinpa

iTrader: (1)

i'm at that point now with my exhaust. Got headers on last night going to do TSP catted Y tonight. If I don't need the rear O2 sensors do I need the sim I've seen on here for the PCM to see it?

z2fast8

it has the passenger side front o2 missing the rears are removed and it has been tuned. the car runs fine just a slight miss at ideal-1700 rpms everything else is smooth as silk and it only miss's one in a while

z2fast8

come on someone has to know or have gone through this befor