AEM uses the latest wideband sensor - require minimal warmup - like 5 seconds so it can be used to set up cold start.

I've checked the digital innovate and aem against a reference (lab quality) wideband. AEM is faster and a bit more accurate. The digital innovate is a close 2nd.

Cruise - aim for 15:1
WOT - aim for 12.8 to 12.9:1

Tune for part throttle cruise with jet size. Then adjust the PVCR to get WOT.

51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them