quote:Originally posted by 8pack:
Reading old plugs is a waste of time and for the most part useless. You can put a new set in, run it hard, shut it off and read them provide you know what you are looking for.
If you want to know what's going on just install a wideband and be done with it. I installed a wideband in every toy I've owned in the last 7 or 8 years. I have an analog guage in my Pantera and a ditgital one on my Landspeed bike right now.
The issue with a setup like this where there is variation from cylinder to cylinder with air/fuel ratio (black plugs in the forward cylinders, brown in the rear) is that to get it right and use the CPU it needs an oxygen sensor on each exhaust tube. If not, the location in the header collector is going to be the "average" of the cylinders.
You can play forever and not get the balance right then. So one oxygen sensor doesn't fix anything.