Why's that ? You wont do much body repairs with TIG. You wont make quick brackets, tack stuff in place one handed with a TIG.

As already stated. TIG is great if you need it to look pretty. Other than that there is pretty much no benefit, especially for an exhaust.

It's a bit like the yanks obsession with TIG'ing rollcages. Most of them will say if it isnt TIG welded, it's useless or weak.

I guess WRC dont build theirs right.

So in your eyes. What are all the benefits TIG offers that make it so superior ?