Do I need to weld this or bolt it on?

This is a bolt-on catback system — no welding required. You'll connect at the cat converter flange and secure the rear mount to your existing hangers. Standard hand tools and a jack are all you need.

Will this affect my turbo setup or fuel tune?

A catback exhaust is downstream of the turbo, so it won't trigger a check engine light or require a tune. You'll get better flow and response, but your engine management stays stock-compatible.

Does this come with gaskets or clamps?

The assembly is included. Verify mounting hardware and gaskets are on hand before installation — your OEM clamps may work, but we recommend checking fit at the cat flange and rear hangers first.