O2's ??

[STR8BALLN]

Is there any reason or benefit to changing the O2 rich/lean threshold:

stock:
min rich/lean: 300 mv
max rich/lean: 650 mv


New seen in a previous tune:
min rich/lean:450 mv
max rich/lean: 450 mv

Any benefit going to 450 mv as the max threshold over the stock settings?

[imgarten.fredrick]

Is it for the front or rear sensors

[STR8BALLN]

Yes its the front O2's. Just trying to see the reason to do this.

[Quoll]

What they intended was for the P.I.D controller to have no deadband; rather the moment that the voltage surpasses that centre-point they wanted the PCM to start controlling the injector adders to compensate.
Problem is, I don't believe it works...

Although, let's wait for a Pro to comment further.

[schpenxel]

I've never really seen it matter on Gen 4's. I use 450mv usually