What catalytic converter makes your truck the loudest?

Answer 1

None. Depending on your state and their emissions standards (i.e. a state like Pennsylvania which requires an annual inspection to pass emissions standards and receive a sticker), this is not a smart thing to do, because your vehicle won't pass emissions, since not having the catalytic converter violates related laws. However in a state like Nebraska where there are thousands of very loud trucks driving around, the odds of paying the price are decreased, and the most you're likely to get is a "fix-it ticket." However, be aware that, even in states with lax emissions enforcement, an officer may still pull you over under suspicion of having a malfunctioning exhaust, or for violating noise ordinances or disturbing the peace with the noise, and once this happens, many secondary charges can be added like driving without a seatbelt, driving and texting, and they can make you do the whole sobriety test, too, if they smell or think they smell alcohol once they've pulled you over. So if you're going to remove your catty (which will make your truck louder than one with any catty on), be sure you're in compliance with every other law, just in case.