possible turbo build
 

I was wanting to put a turbo on my 2006 mazda3 2.0L, but I've read that after you put a performance part on that gives the car a high horsepower increase(such as a turbo) that you need to get it tuned. I've been asking around and cant find anyone to tune my car after I had put my cold air intake in, will i be able to find someone to tune it after i put the turbo on? Because as far as I know, my car is untunable. any help is appreciated, sorry if i sound like i dont know what im talking about, I just started to really get into cars. thanks in advance.