The quality of the materials and the welds are excellent. However, I purchased this as a stand-alone item with the intent to fit to the Borg Warner EFR7163 turbo (as supplied in the m520 kit). If you're planning on doing the same, be warned, it doesn't fit! The downpipe for the 7163 turbo uses a v-band rather than ****** adapter and the pipe itself has a more acute angle bend to access the larger turbo. Otherwise a great product.
Which is why we supply a v-band downpipe as part of the m520 upgrade, which you can also see in the m520 kit shots.
Build quality is excellent as would expect from Mountune performance parts. Waiting to install and connect to the V3 exhaust already fitted
Excellent quality, great welding. No fitment issues; typical Mountune fits like OE parts. With V2 exhaust , charge pipe kit & FPM 375 it deepens the exhaust note & turbo spools up noticeably quicker making the car even more responsive or FAF (Fast as F!!!)