Ok so yep definitely a noticeable difference!
Sound wise deeper engine note and louder dsg cracks, I had the centre silencer removed a few weeks ago which made a HUGE sound difference but also brought in a bit of a boom/drone removing the precat seems to have made that boominess much less!
Picks up abut nicer and generally feels a bit more freed up in power.
Mpg I've not really noticed as I average around 18-20mpg lol.
Here's a little vid I put together, not the best but hopefully shows how it's changed.
Will more than likely be getting a Scorpion turbo back exhaust soon