2012 RSS with Voodoo Exhaust Question.

I am looking at purchasing a 2012 RSS that has a VooDoo exhaust on it 12,000 miles on the motor. (WAY to loud for me.. ) The guy who owns it has added a K & N Filter to it but did not have it tuned. I'm not sure if if needs to be or should have been tuned. It does POP a lot on deceleration. I have two questions about this.

1. What is the long term affect of not running a tuner when there should have been one?

2. Will there be any issues if I put the factory exhaust back on.

Thanks !!! :)

You would best check the exhaust gaskets at the Y joint and the muffler and after re-installing the oem muffler start her up and let her Idle so the computer can map the mixture to the changes. Then you will be back to stock and keep the air filter they are better than the stock ones. :thumbup: