i want to get a better sound and i see many people taking about mid pipes, i know that the offroad pipes give a louder sound but they dont pass emissions. how hard is it to change back to stock for the tests or should i just go with street legal stuff?

 

The first time you put on the mid pipe it may take a little time to get the header bolts loose. If you have acess to a lift it would be really quick to do less than an hour. Once you know what you have to do, even with just ramps i bet you could change it in an about an hour.

 

slp makes a midpipe thats awesome in that
you can change between resonators, cats and just straight pipes.
drawback is its kind of expensive....

 

thats what i have, its nice