Originally Posted by
HONDAS_ONLY
...but i didnt have time to read every single code, but i didnt find anything about the use of aftermarket equipment being illegal unless it is unsafe. and if it isnt in writing, then SOMEONE is making it up.
Aftermarket equipment is labeled illegal when it makes a vehicle unsafe, and you've already admitted to being uninformed about the laws. State Troopers takes tests on the codes, so many know it thoroughly -- locals may focus primarily on local ordinances (which affect primarily mufflers).