The more I read, the less clear this all becomes! Some references I've googled say the MVPI2 ships with credits. Some say it doesn't. Some people have mentioned that it can take 10 credits ($500!!!) to tune your ECU/PCM...on top of the $300 for the unit itself, which sounds a bit high.
Here's the deal...I bought a 2003 (C5) Corvette with an LS3, heads, cam, etc. that was previously tuned via HP Tuners. I want to make a few changes (intake/MAF tube size, exhaust, higher octane fuel) and re-tune. I see the MVPI2 unit is $300. I was going to buy it so that I can tinker with the car's tune, but the credit thing scares me.
Question 1...
How many credits do I need to purchase, in addition to the MVPI2, so that I can edit/download/tweak/save tune files for my 1 car?
Question 2...
Do I need to buy credit(s) for every time I want to save changes to a file? Or is it a 1-time-purchase that fully unlocks my current vehicle by VIN, etc?
Could someone please help me figure this out?
I have googled and read all sorts of things about credits, but it's really not clear and/or there's a bit of contradicting info/old info still online coming up in searches.