Installing an IMCO 924 Turbo muffler will improve your HHR's mileage and provide more power while improving the exhaust tone. We had our install done at Richard's Performance Muffler in Vista, CA. In less than an hour you can ditch that stock "aluminum turtle" and be stylin'! 

 

*Note: Various chrome tip styles are available separately from the muffler. We chose an oval tip as it filled the bumper hole better and says "Hey! I'm not stock" when viewed on the road. A smaller round tip will reduce the final muffler noise, while a larger oval tip increases the sound level. Keep this in mind when selecting your tip.