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 !!!