Tune?
 

Howdy folks- so I put some Pacesetter headers on my 2001 3.8 last August, love them. I've been told I should get my car tuned and have recently been thinking about forking over the money to do so. I'm looking to make the car run a bit better/smoother and squeeze some more power out of it. Few questions I'd appreciate some help on:

Flash Tune or Chip?

Are there any do it yourself tunes?

Would you recommend a tune? My car has headers, headers, full exhaust, intake.