Straight Pipes in Texas: Legal at State Level

Yes, straight pipes (no muffler) are legal in Texas under state law. Texas Transportation Code does not prohibit them. However:

• Local noise ordinances may still apply.
• Federal EPA regulations prohibit tampering with emissions controls on newer vehicles.
• Excessive noise can lead to citations under disorderly conduct or local codes.

So while the state doesn't ban straight pipes, practical enforcement varies by municipality and vehicle age.