No need for a dyno tune with these cars for just bolt ons. Just get a good tune from someone like VMP and then log the tune.
What does a tune from VMP run? If the price is comprable the dyno is still the way to go because it's realtime the first time. Where the the canned tune it's still just the same tune that they send everyone else with the same bolt-ons.
Looks like I picked the wrong week to quit sniffing glue.