how would this work if i wanted to buy the tune for my stock tc and then put a cam and intake upgrade (the gm stage kit) on it would i have to rebuy the tune?

 

Hahn's tune is a preset(canned) tune. Those mods will still help obviously but it's not like a trifecta tune where you could tell him you got those mods and they send you another updated tune.

 

it is a canned tune, and having any car dyno tuned specifically for the mods will get the most out of those mods on the car vs the can tune

but if your going with a cam, etc

go with a custom tune after you get all your parts bolted on