[Excaliber]

Petek my concern is that as you get farther away from the heads the greater is the possibility of the exhaust gases not being at optimum temperatures. This may vary from vehicle to vehicle. With no way to read your "fuel curve" or "fuel air ratio" the engine may "feel" like it's doing OK, but there would be no way to be sure.

The third wire on the 02 sensor is for rapid warmup, I'm not sure it would hold the temp high enough and steady enough for regular engine temp driving. What the heck, maybe running a little rich is a good thing?

Ernie