LT Header Guys!!! No more extensions or corvette o2s!
11-30-2012, 07:23 AM
#61
The heat factor is very real though.
12-01-2012, 09:30 AM
#63
Yes...very true. In fact, I believe Ford was the first to use heated O2 sensors here domestically. Here's why you heat the sensors: The vehicle cannot go into closed loop until the O2 sensors are fully operational. When we first started seeing these computer controlled systems, emission requirements were no where near as strict. So it was very common to see cars stay in open loop for several minutes until the exhaust could heat the sensor enough to flip the car into closed loop. But the computer has so little control over emissions in open loop that federal regs forced the manufacturers to get vehicles into closed loop as soon as possible. Hence the use of heated sensors. You can now get cars into closed loop darn near immediately after close start up! What is just as critical these days is getting the cats up to temp. They too need to be at a certain temp to operate correctly. A lot of work has gone into the materials and placement of the cats to get them operating as soon as possible.
By the way, the placement of the sensor in the exhaust is extremely critical to proper operation. That's why any time an aftermarket manufacturer moves the O2 sensor from the factory location, it really makes it difficult to receive a CARB approval.
By the way, the placement of the sensor in the exhaust is extremely critical to proper operation. That's why any time an aftermarket manufacturer moves the O2 sensor from the factory location, it really makes it difficult to receive a CARB approval.
06-04-2013, 01:27 AM
#64
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Bringing this one back!! This is an awesome "cheat code"! It's simple to do, and when you go to plug the O2 sensors in it's like the rear harnesses were made for this. Mad props to the OP fro coming up with this!! 
06-05-2013, 01:59 AM
#68
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Everything looks good but one thing I'd add is that if you have a '98 f-body you're pins are going to be different. I put differences below:
1999 or Newer
25+26
28+29
65+66
68+69
1998
1+5
2+6
46+41
42+47
Here's a link to pcm pinouts:
'99 pin out
http://www.ls2.com/boggs/torques/99pinpcm.htm
'98 pin out
http://www.ls2.com/boggs/torques/98pinpcm.htm
1999 or Newer
25+26
28+29
65+66
68+69
1998
1+5
2+6
46+41
42+47
Here's a link to pcm pinouts:
'99 pin out
http://www.ls2.com/boggs/torques/99pinpcm.htm
'98 pin out
http://www.ls2.com/boggs/torques/98pinpcm.htm
06-05-2013, 03:18 AM
#69
So when you switch the Pinouts to read the front sensors with the rear harness, do you still have to delete the rears in a tune to get rid of the SES? I read through the pages but if I overlooked it I apologize.
Awesome write up and thank you very much man! This will save a ton of money for people. And thanks to whoever brought this thread back from the dead.
Awesome write up and thank you very much man! This will save a ton of money for people. And thanks to whoever brought this thread back from the dead.
06-06-2013, 12:02 AM
#70
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So when you switch the Pinouts to read the front sensors with the rear harness, do you still have to delete the rears in a tune to get rid of the SES? I read through the pages but if I overlooked it I apologize.
Awesome write up and thank you very much man! This will save a ton of money for people. And thanks to whoever brought this thread back from the dead.
Awesome write up and thank you very much man! This will save a ton of money for people. And thanks to whoever brought this thread back from the dead.
06-28-2013, 10:35 PM
#72
Launching!
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Interesting. I have been searching the forum on lt install for a while and just now ran across this thread. Saved me $100 on new o2 sensors.
I do have a question though. Are the front o2 sensors different than the rear o2 sensors? I plan on having Frost tune out the rear o2 sensors and was wondering if I could hold onto them as spares for the fronts.
I do have a question though. Are the front o2 sensors different than the rear o2 sensors? I plan on having Frost tune out the rear o2 sensors and was wondering if I could hold onto them as spares for the fronts.
06-29-2013, 12:16 AM
#73
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Interesting. I have been searching the forum on lt install for a while and just now ran across this thread. Saved me $100 on new o2 sensors.
I do have a question though. Are the front o2 sensors different than the rear o2 sensors? I plan on having Frost tune out the rear o2 sensors and was wondering if I could hold onto them as spares for the fronts.
I do have a question though. Are the front o2 sensors different than the rear o2 sensors? I plan on having Frost tune out the rear o2 sensors and was wondering if I could hold onto them as spares for the fronts.
08-21-2013, 01:02 PM
#79
I just used this write up, great information! For some reason, the worst part for me was getting that grey cover off. Not really sure why it was so stuck on there, but this write up made the whole ordeal very easy! Now I have o2 simulators and extensions for sale... lol!
