I recently bought an A3 2.0 TDI 140. I had it remapped to 170 almost straight away, however Im still after abit more power.

What ways can i get this, IE, air filter? bigger turbo? exhaust?

Im new to this and not the biggest whizz with tuning cars so go easy please.

Any suggestions welcome.

You can always do air filter and exhaust, how ever neither give much power most the reason for those mods are to be able to put a bigger turbo on, or at least push more boost. With the diesels for any kind of pop you're gonna need a chunky turbo, however exhaust, air intake, inter cooler, DV or BOV, and small stuff can definitely be a fun way to make your car a little more unique