No, but the welding is shocking- that's why it's been plated (hides a multitude of sins), lambda on just one runner shows massive lack of understanding, and the collector design is poor/ non existant.
Plus the final bore of the manifold looks about 1.75" or 2"- again, on something designed for performance, is no better than stock.
This isn't a plug for our products by the way- I'd run a stock G40 de-cat over these manifolds any day.
How many miles has your car done since 2000 Frode?