halokiller

I just bought a used 03 z06 and want to read the tune and possibly adjust idle speed and idle spark advance. Is it possible to make those small changes at a shop for cheap or do I need to buy a tuning suite myself?

skyavonee

Here's an option:
corvetteforum.com/southern-california/swaps-upgrades-engine-builds-tunes-and-more.html

$100/hr for you to use their dyno and tuning software. I have no personal experience with them.

American Heritage

Yes we tune via HPtuners and or EFIlive

American Heritage Performance
310-326-2399
http://www.americanheritageperformance.com/
We are located in Los Angeles (harbor city/ the southbay).