well the main thing to remember, is do what your engine builder tells you. Cause he is the one that will ultimately take care of anything if it breaks.

DonF told me to give it hell, we broke my 2.0l in on an engine dyno within 5 min of running it was doing 9800rpms.

Charles i know builds alot of Mainstreams motors and IIRC they advocate tuning immiedietely if you can afford it. WHen i worked there we did alot of 600whp cars that were fired up in 1 bay, then driven to the dyno for scotty to tune it.

My knowledge comes alot from people that have done this more than me. An id take Charles from Mainstreams word and DonFs , ive built 3 motors, theyve built hundreds.

who am i to disagree with people that know what works