Don't use stock.

Andrew

You need a wideband otherwise you can't tune.

Stock O2 sensors are only telling you if you are above stoich (14.7) or below. They don't tell you how much richer or leaner you are. That's why they are cheap.

But in tuning the devil is in the details so you need to have accuracy...

Illuzn, I'm in San Jose and can likely help you out if you get stuck.

http://www.battlegarage.bigcartel.com/s ... ing-wiring