View Single Post
Old 04-17-2011, 08:06 PM   #6 (permalink)
christian370z
A True Z Fanatic
 
christian370z's Avatar
 
Join Date: Jul 2010
Location: Newport Beach
Posts: 3,900
Drives: 2010 370Z/Saab 900se
Rep Power: 432
christian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond reputechristian370z has a reputation beyond repute
Default

Quote:
Originally Posted by wheee! View Post
whuuuuut...? The oxygen sensors are behind the cats. The wideband sensors go BEFORE the cats....
Uh, yeah. There are 4 O2 sensors: two primary sensors in the headers which sense the A/F ratio and play a major role in the way the car runs as the ECU uses that A/F information to adjust both cylinder banks fuel/timing to maintain an optimal A/F ratio. The two o2 sensors that are in the cats are only there to monitor the condition of the converters, basically to make sure they are present and doing their job.

To access the A/F ratio, you can use OBD 2 live monitors.
__________________
-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
christian370z is offline   Reply With Quote