Nope. One weekend on my way home I stopped at AutoZone, bought a K&N Air Filter, and Six plugs... The next day when my engine was cold, I installed the AirFilter, cursed up a storm installing the darned plugs, and changed my oil. When I drove out to make sure everything worked alright, I was surprised at the performance gain I got. But thats all I did. And that was about 7 months and 8k miles ago... I changed my oil, cleaned my air filter, and checked my plugs about two months ago, and everything is running fine, if not better. So I don't know if its just a fluke occurance, or what...
Black 2003 3.8 Auto
K&N Air Filter
BOSCH +4 Platinum Plugs
True-dual exhaust Flowmaster 80 series
20% Window Tint