2012 C6 Corvette Sports Four Cats Instead of Two
EPA Requirements force Chevrolet to add a second set of catalytic converters to the mid-pipes of the 2012 Corvette
If you were to look under the new 2012 Corvette you might be a little surprised at the exhaust design. The C6 Corvette has, since its release, featured two large catalytic converters on the down-pipes, but in 2012 that had to change due to the increasing stringency of EPA regulations. This has resulted in the installation of a second set of catalytic converters on the stock exhaust’s mid-pipe.
Thankfully, for us Corvette fanatics, these extra environmental helping catalytic converters will not result in a decrease in engine power output, and no drops in HP or Torque numbers will be seen. The extra weight of the cats will be minimal, also, and there shouldn’t be any reason to expect the 2012 Corvette’s performance to drop down from 2011 at all. Less thankfully, this does mean that aftermarket exhaust systems that were functional for the 2011 may not be functional on the 2012–at least, not road legally.
However, not thankfully, this exhaust change has resulted in some issues in aftermarket exhaust fitment. Already Akrapovic, who are one of the world’s leading and finest exhaust system manufacturers, has stated that their cat-back systems for the C6 will not install on the 2012 Corvette, and that their axle-back systems, known as the slip-on system style, has issues with fitment as well. Thankfully, being the consummate professionals that they are, Akrapovic is producing a solution to this issue. However, this news also means that similar catbacks from other companies may have fitment issues on the 2012 Corvette.
So, be aware of the changes to the Corvette stock exhaust between the 2011 and 2012 models and be sure to check with the manufacturer or your retailer when purchasing an exhaust for your Corvette.