Test pipes landed - as per Evolve's video, the Tegiwa's dont come with Donuts.
A little googling later found the missing OE parts:
Gasket ring 11627830668
I found them on BMWs eBay store, at:
BMW Genuine Exhaust Manifold Gasket Ring 11627830668 | eBay
Find many great new & used options and get the best deals for BMW Genuine Exhaust Manifold Gasket Ring 11627830668 at the best online prices at eBay! Free delivery for many products!www.ebay.co.uk
just in case anyone else buys the Tegiwa kit, and needs the donuts
I was looking at doing the test pipes but do you have to cut the primary cats out and weld the test pipes on in place?
Check out the aftermarket German made mats on eBay with m stitching. Seem much better than OE mate