Has anyone got any suggestions for moderate performance upgrades on a tsi VRS Octavia? I was thinking remap, removable remap box or exhaust? Thanks

The simple upgrade is a remap and there are plenty of good tuners out there. Racingline, Awesome Gti, Superchips, R-Tech to name a few. 

Generally you need a sports cat and downpipe to benefit from any real gains as a cat back just gives you more noise.

I am not sure if you are DSG or manual but if manual the clutches are not all that strong once mapped and do tend to start slipping. If DSG you can have that mapped for better shift points etc.

so many posts on this topic on this forum, even to the point of people sharing the sound of their new exhausts. Also, as the engine is shared with other marques, you can search the VW Golf and Audi forums - the engine is EA888 gen 3. Forums are a great source of knowledge and experience and all have a handy search function 😜