FourG63 97GST

whats the verdict on the better sensor to run with longtubes.
since I'll be using the long rears sensor as my "Front".
has anyone tried both. this is a $150-200 investment, rather get it right the first time.

I'm currently throwing these codes also.
[PCM] P0133 - HO2S Slow Response Bank 1 Sensor 1
[PCM] P0153 - HO2S Slow Response Bank 2 Sensor 1

not really looking for the "I'll only use oem because that what it came with response". Because I know it's quality too, and OEM cars use bosch sensors too, and most widebands

Thanks

waddisme

My tuner preferred the AC Delco because he said they would last longer. I haven't changed mine yet as I am not sure it will eliminate the 0133 code. I thought it had to be tuned out, which my tuner did not do.

neutron82

i'm using my factory rear sensors as my fronts with no issues... that being said i used the bosch 13111 sensors on my trans am and had no issues there either... the only reason i replaced them on my trans am was because it had 140k on it rather than the vette having 34k

Last C5

I run the Bosch, but it doesn't sound like you can wrong with either.

tblu92

Using the rears on the front is a common thing for LT headers---They heat up better and are more sensitive--The 02 bung locations are now further back as much as 3' this is what causes the narrowband stock 02'snot to function properly--There is NO real 100% fix--Thats why they are illegal in most staes as they create a rich mixture at P?t
I've had some good results however by tweaking the "02 swithching points" you need to lower them 100-200 points--this helps--however you need full tuning software like HP or EFILIVE to do it--

FourG63 97GST

I do have hptuners, where's that table though?. I figured it would be in Fuel Control > OL & CL ?

tblu92

In EFILIVE its in the fuel section under the title "02's"--I would assume in HP somewhere similar

lionelhutz

You should confirm the closed loop mixture ratio if you have a wideband. Then, just turn those codes off. Way cheaper than new sensors that may not even fix the problem. I had one of those throw up every now and then yet my fuel ratio's were good indicating the O2 sensors were still working OK.

FourG63 97GST

My a/f is normal according to my wideband, I've just lost about 2 highway mpg and trying to get it back, so I figure it was about that time and it won't hurt. Have 89k on them

Luweegy

WhenWTE=neutron82;1580447663]i'm using my factory rear sensors as my fronts with no issues... that being said i used the bosch 13111 sensors on my trans am and had no issues there either... the only reason i replaced them on my trans am was because it had 140k on it rather than the vette having 34k[/QUOTE] When you put the rear o2 sensors in the front you then turn off the front o2 sensor codes? and turn the rear o2 sensor codes back on on the rear o2 sensors

lionelhutz

No, you connect the wires to the front O2 sensor inputs using adapters, which makes them front O2's.

The rear O2 sensors do not affect the fueling so having the rears only would be pointless.