Update: FiTech working really well. Starts right up, and the Lunati 703 idles lower and smoother than I thought it could. The system will find proper idle in gear and with the a/c on, which is totally new and totally appreciated. I am doubting a lot of what the forums say about the unit only learning when the temp reaches 170F. My unit seems to have settled in, been driven a few times, and in cool weather, has barely reached 170F, but it certainly seems to have learned the motor while spending most it's run time far well below the 170F mark (so far, but summer in Texas is coming). It starts without pedaling, holds a high cold idle for too long, and I'll work on that...I think I should probably change the thermostat, but it's just working too well to dive in and fix it so far. I've only changed the idle and low rpm AFRs, taking targets to 14.1 due to a very slight after-smell, and it seems to like it - plugs look about right. AFRS run about 13.5ish cold. 432 inches, Stealth heads at about 10:1, and Lunati 703 cam. Pulls so much stronger and is much more ticklish to the GO foot. Advice to others - their data leaves much to be desired. Read all the posted reviews and installs you can - they are getting more and better all the time. You'll learn more skipping the goofies and the haters and focusing on the problem solvers. Can't wait for a long summer trip to test the mileage.... If I don't like it, I'll change it while I sit in the a/c.