Our UBend Delete removes the restriction of the UBend section on the stock down pipe. This can free up a lot of HP and lower your KR level.
GM has the kinked section of the down pipe to protect the O2 sensor but it is the most restrictive section of the entire exhaust. By mounting the O2 sideways and using a larger pipe the ZZP UBend Delete improves exhaust flow.
Welding to the stock cat is required.
If you bought our ZZP down pipe you would not need the UBend delete.