Tex. Transp. Code § 547.604

Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
Section 547.604 - Muffler Required
(a) A motor vehicle shall be equipped with a muffler in good working condition that continually operates to prevent excessive or unusual noise.
(b) A person may not use a muffler cutout, bypass, or similar device on a motor vehicle.

Tex. Transp. Code § 547.604

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.