P0133/P0153 Code - Long Lead O2 Sensor

[swharvey62]

2009 Mustang with LT headers (Ceramic Coated) and Supercharger. I continue to throw P0133/P0153 (Slow O2 Sensor Response) codes. I know this is common and seems to be due to relocation of the sensors further back. Symptom, start car and drive for a bit. No codes. Stop for a period of time and take off again. Shortly after codes pop. Still testing this theory, but it seems if I let the car idle for awhile the code does not come in. I have been watching O2 Sensor Voltage to determine length of idle time. I know these codes can be caused by faulty sensor, faulty wiring, or exhaust leaks under stock apllications. I have tried adjusting Transport Delay and am currently at 25% higher than stock and still throw codes. My questions are:

1. Does anyone have a permanent fix for this?
2. Is there an O2 Sensor with longer leads that work in this application allowing me to get rid of the O2 sensor lead extension?
3. Any other thoughts.

Thanks in advance.

 

[FredB66]

Bosch offers O2 sensors with a few different lengths. I've heard some complaints about Bosch but they've been working fine with my LTHs. Here are the part numbers and lengths.
15716 - 11 13/16
15717 - 16 5/8
15718 - 20 1/8
15719 - 25 3/16

 

[swharvey62]

I have heard complaints about them as well. Thanks for the information though. I am trying to figure out if Ford using the same spec sensor in trucks but with longer leads.

 

[Juice]

O2 transport delay. Multiply table by 1.25. LTs increase the response time because the sensors are further down stream. Im assuming you are tuned w/SC.

 

[JC SSP]

Anyone to relocate the 02 bung on the header?

 

[swharvey62]

Thanks Juice. TD already at 25% and yes I did have a dyno and tune done.

 

[swharvey62]

Thanks JC, That is on my list of things to consider.