AEM EFI starting & tuning (Gen3 426)

Ok guys, here's an update.
I finally drove the car for the first time the weekend before last and it drove exactly like I imagined it would. The EFI gives it very good driveability starting up and cruising around; my girlfriend with no experience driving a muscle car (though she does now) could easily drive it. With the 3.23's and the TKO 500 (3.27 1st gear), the gearing is perfect for a wide range of driving. The TTi Xpipe and long Borla mufflers give it a very mellow sound. ...until I lay into it, and by 3k rpm its roaring to life and by 3.5-4k the cam kicks it in violently; it easily broke the 315's loose in 2nd gear at part throttle. Being the most powerful motor I've ever driven, it actually scared me a bit. I can't wait to unleash it on the track! Other than the initial pulse width bump, I haven't touched the tuning so it still runs a bit rich (safer than lean) and it idles a little high. That's the next step of course. This last weekend, I got the Streetlynx and Alterktion aligned and drove it the beautiful 150 miles home via a lonely, super tight and windy mountainous road. It was perfect for breaking the whole car in: hard acceleration & braking, a lot of shifting, and articulating the suspension & steering. Driving it moderately hard and running a bit rich, I got about 13mpg. Not bad, but that's only going to improve as it wears in and I tune it up. With 62k original miles on the body and extremely well preserved interior it's a clean sleeper, though the wheels and stance give it away a bit, especially if someone notices the 12.5" tires tucked in there. It now awaits patiently next to my 66 Valiant which is currently undergoing a BBP conversion w/ disc brakes and 8 3/4 upgrade. 2x 66's!
I.AM.STOKED! :headbang:

Edit: I forgot to mention my fix to the gotcha with the ECM power, which will likely assist somebody with a similar situation! I had to use a key on power source combined with a cranking on power source to keep the ECM switched on during key and cranking. There was no single power source on my ignition switch that supplied power for both. I used a Painless wiring kit but I think this applies to factory as well. Anybody know this? We were perplexed by this.:-k