Which Subaru parts require a Tune?

Our question of the week this week is one that comes up somewhat often.  What parts require a tune?  And why does it seem that you have to tune your Subaru for every part that you want to install?

Do I need a tune if I put on an intake?

Do I need a tune if I put on a bigger intercooler?

And if so, why?

A lot of this comes down to the way that Subaru engines measure the air that is going into the engine, and we go into detail about that for this video.

It is also worth mentioning that we recorded this video before the recent changes to the Cobb Access Tuner and Cobb AccessPort, so this is a more general discussion, not a discussion focused on those changes.

But rest assured, we are working on a video specifically about that now too.

Thanks for watching and Stay Tuned!