v8

iTrader: (10)

How much performance do you loose when your 02's go out the front ones??

they've been throwing codes, so i fixed that problem friday.

Under wot bank 2 sensor 1 was at 950 and the bank 1 sensor 1 was at 925, A/F ratio still showed 12.8, but the damn p1133 and p1153 codes kept comeing on too lol.

litreddevil

iTrader: (4)

IF YOUR O2's R NOT WORKING RIGHT IT COULD BE A BIG DIFF.I RAN SOME LEADED FUEL ONCE AND THE TRUCK WOULD RUN RICH SOMETHIMES SO RICH THAT IT WOULD NOT EVEN IDLE.

budhayes3

iTrader: (19)

Incorrect front O2 readings can make quite a noticeable difference in a vehicle's performance and economy

CrabhartLS1

If your O2s stop working the pcu puts the engine in "limp home" mode. It runs like crap but is technically able to propel itself. The O2s are what tell the pcu the amount of oxygen is in the exhaust, which compairs to the amount of oxygen going into the engine. If the O2s don't work, the engine doesn't know if it's running rich or lean.

If you haven't noticed any changes then probably not that much performance was lost.

v8

iTrader: (10)

well only time will tell how much performance was lost, i do know that it was blowing alot of black smoke out under wot, just hasn't seem to run right the last month or so, when i was logging the truck bank 2 sensor 1 never got above 400 and then at wot it was reading 950 and thats when the black smoke would come out, i just thought it was the motor getting ready to go lol, now i have to come up with another way to get my 6.0 lol