I was curious about o2 placement on a cat-deleted evo... Are you able to install the wideband in the same place as the stock sensor since there is no cat to disrupt the afr readings? Or am i gunna have to pull out the d/p, i JUST put in, to drill and weld the bung in? hah
Also, this might be a stupid question, but how do you integrate the wideband to your tuning; as in do i hard wire it to my ECU and read it on to my laptop thru my tactrix, or does it have a usb output straight to my comp. And sorry im in a rush to get to work and couldn't preform an in depth search, so to all the haters out there, please dont blast me!! Thanks guys!

05 A.S. EVO VIII MR FTW!!!!!!!!!!!!!!!!!!!!

 

If the car is decated you can put the sensor there but not my preference most WB companies will tell you something along the following lines I have mine installed in the DP cost me 10 bucks to have the bung welded in :

"The AFR sensor should be located between 12” and 48” from the engine, upstream of any catalyst device if so equipped. The closer the sensor is to the engine, the more likely it will be overheated, possibly shortening its life. The further it is from the engine, the more likely condensed water will get into the sensor and thermally shock it, again possibly shortening its life. The sensor should be mounted at least ten exhaust diameters upstream of the exhaust exit (ex. for a 3” exhaust pipe, that is 30”). If the sensor is mounted between one and ten exhaust diameters from the exhaust exit, the AFR measured will be leaner than the actual AFR by as much as 2 AFR at low engine speeds (i.e. less than 3000 rpm)"


The logging depends on the WB you buy some have serial cabling to connect directly to your laptop and logged through EVOSCAN, some have a 5v analog output that can be directly pinned to the ecu and logged through EVOSCAN, some have both, some have neither and are just a gauge in the car. Never seen one that was USB though

Check out this thread on pinning 5v analog output to the ecu and what needs to be done to do so:

https://www.evolutionm.net/forums/ec...ial-cable.html

 

serial to usb cable

 

That would work. Most home laptops dont even have serial connections anymore I bet.

Never seen one that was straight USB though You??

 

You don't even have to have weld anymore. This is the greatest thing ever for DIY wideband sensors;
http://www.motoiq.com/magazine_artic...sor-mount.aspx

As far as logging, I feed the 5v directly though the rear O2 sensor wire to the ECU. I cut the wire in the harness, threw in some spade connectors all around, and log rear O2 with Evoscan.

 

nah only serial. can't understand why, like you said laptops dont even have them anymore

 

k thanks for the help guys. EvoM to the rescue!!!

 

Don't forget about the clocking location - its recommended to install the O2 in the "top" region of the pipe (thus requiring it to be removed and a bit more of a pain).