Afr Sensor After Gutted Cat

[kersey]

I need to mount my AFR sensor, i have the dynotech high flow cats that i am gutting. will it work if i mount the afr sensor in the bung after the gutted cat(were the post cat O2 sensor belongs). or should i just get rid of the cats and redu my exhaust and mount the AFR sensor directly after the collector.

[misterp]

It will work great in the rear O2 sensor bung.

 

Mr. P.

[kersey]

thanks bro.

Edited December 22, 2008 by Joey SSS (see edit history)

[Krambo]

Yea, it will work however closer to the collector the better. Correct me if I am wrong however isn't the rear O2 sensor in the Dynatech system on a bend in the exhaust and at a 9 o'clock position? If so, that will not be an ideal location however will work.

[BILLS04SS]

Yea, it will work however closer to the collector the better. Correct me if I am wrong however isn't the rear O2 sensor in the Dynatech system on a bend in the exhaust and at a 9 o'clock position? If so, that will not be an ideal location however will work.

 

 

I didn't realize you could remove the existing 02 sensor and replace it with the AFR one. I was under the impression you had to have a new 02 bung installed by a muffler shop

[misterp]

I didn't realize you could remove the existing 02 sensor and replace it with the AFR one...

Yes you can - the threads are the same.

 

Yea, it will work however closer to the collector the better...

Really?? After watching the Innovative guys dyno vehicles by sticking the probe 6" inside the tailpipe I thought it wasn't that critical of a deal!

 

Mr. P.

[Krambo]

Yes you can - the threads are the same.

Really?? After watching the Innovative guys dyno vehicles by sticking the probe 6" inside the tailpipe I thought it wasn't that critical of a deal!

 

Mr. P.

 

Quoting Directly from their (Innovate) LM-1 manual:

 

"...You may use the optional Exhaust Clamp to mount the O2 sensor to the car's tailpipe when taking readings from cars with catalytic converters, however it is recommended instead to use the bung (as described above) to give you the most accurate reading. Measuring after the cat will result in leaner-than-reality readings, depending on the efficiency of the cat. Some operators of chasis dynos use this method and roughly "correct" the reading."

 

Now, if no cats are present I would think it would have minimal impact as long as the sensor has the correct amount of heat so that the readings are accurate. I have done all my tuning with tailpipe readings and have noticed that the sensor needs to heat-up before it will even start reading AFR (on a dynojet tailpipe sensor). For me, on the dyno it took about 10 seconds of hot exhaust flow to get a reading...then I floored it.

 

They (Innovate) also suggest a 10 to 2 positioning of the sensor with 12 o'clock ideal to avoid condensation killing the sensor. Autometer has requirements to install in the collector 6 inches away from any bends in the exhaust, pre cat and in the 12 o'clock position.

 

Innovate LM-1 Wideband Manual Link

 

 

Edited December 22, 2008 by Krambo (see edit history)

[Jaymz]

works great on mine, no issues what so ever