Will I need new clamps or gaskets to install this?

Hardware for connection to the catalytic converter is not detailed in the product specs. Grab OEM gaskets and clamps when you order to avoid a second trip — they're cheap insurance.

Does this require any welding or modifications to fit?

Catback design bolts directly to your factory catalytic converter. No welding, no cutting, no fabrication needed.

Can I use this if I've modified my intake or added a tuner?

Catback systems work independently of intake or tune changes. If your fuel map is already optimized for your mods, this bolts in without re-tuning.