I just got done putting my turbo on my car and it idles real rough. I was just reading I everyone says the maf has to be in a 3in pipe. Mines in a 2.5in pipe. Im guessing that's why it idles rough or you think its my tune.

 

You should change your piping coming from the IC to the TB to a 3in pipe

 

pictures or it never happened. You need to tune your maf tables.