Air/ fuel tuning

Mattax said
yes. Exactly. a 4 or 5 gas on the dyno.
The main reason I'm aware its doable was that Shrinker and some other guys discussed ways to do it on Speedtalk a few years back. So I know he's not the only guy whose done it.

Does this work?

It works and that's the link.

Thank you for posting it. Remember, he is using lambda on that A/F meter and not A/F ratio.