Aftermarket Exhaust for MK6 118TSI

[Kiark]

If I wanted to get an aftermarket exhaust for my MK6 118TSI, what would I have to know?

I noticed that a lot of websites offer GTI exhaust "systems" but nothing ever for TSI's. Will an exhaust labelled for a GTI fit on a TSI without much effort?

Does the ECU need to be upgraded as well? Will that cost extra?

How much does it usually cost to buy and fit an exhaust system on this car?

I know nothing, all knowledge is welcome!

[Stefano82]

The ECU needs to be tuned only if you install a turbo back configuration.
You can install Milltek or Supersprint for example.

[AdamD]

See also The great big MK6 Golf 118TSI tuning thread

[Kiark]

Thanks guys, been a great help!

[Kiark]

I actually have another question. If I get a Stage 1 APR ECU upgrade and then get a turboback exhaust system, will the ECU have to be upgraded again?