We shot a DIY on how to install a Forge Blow Off Valve on our MK7 GTI. This part is the same and would be a very similar install on the 1.8t as well. Take a look and hope this MK7 Blow Off Valve DIY I hope it is helpful.
MK7 GTI and Golf 1.8t Blow Off Valve HERE
MK7 GTI Blow Off Valve...
We put together a quick video to discuss how blow off valves and diverter valves work and what their purpose is..... Check it out.
How Blow Off and Diverter Valves Work - Video HERE
MK7 GTI and Golf 1.8t Blow Off Valve - Link HERE