If you are buying a new Evo I have some serious advice. Go and get the tune pulled! Have your local tune shop go through and explain what is stock and what is not stock in the ECU. Then have a shop go and pick through it for hardware mods. Trust me. You could be sitting on a grenade that has been cooked off for lord knows how long.

 

i'm assuming this is going for used evos, since you're talking about stock vs. aftermarket..

 

you are correct. used buyer beware.