Great! I ordered the Advantage+ this morning. The muffler system sounds good. I left the resonator on, so it has a low growl. The K&N intake is a big intake, so it brings in a lot of air. My check engine light has been on and off since the install. My mechanic told me the ECU tune should solve that problem. Definitely better midrange torque and a longer power band so far. Car is probably running a little lean right now, but hopefully the Advantage+ takes care of that.