Okay so I have looked all over the place and gotten conflicting info. I am looking to find out the best place to install a wide band o2 and should I leave it all the time or just have it installed for tuning the ecu. Now on to the second half for the ecu Isaurio told me to go evo 8 but can i flash it all over to my stock ecu and just add knock sensor since i'm not using and of the evo boost control features from the ecu.