Spazz is correct on running all ranges to set your tables. When I had my Dyno runs I was present for the second go round and they ran the "ever loving ^%*#" out of my engine to set it up for final ECM download. But, in my case I never have back fire or popping. That said, a good tuner with the auto tune feature is a great deal and worth the money.
farmboy- 70's here tomorrow, gonna ride the bike up to KY and see a business customer for lunch.
But by Saturday back down in the 40's.
Sure, rub it in. Got some lemon juice for my paper cut.
No Lemon juice but I'll buy you a brew and treat you to some of the best pickin you've ever heard!