The nice thing about being pressurized...unless your going for ultimate hp and the original design is total crap, theres no need to change the intake out,,,,the air is going to get there, whereas non-pressurized cars any bumps or dead zones would kill it. These 4 bangers have a pretty good design...and its all air, fuel is squirted.

 

Many sold already, and have shipped, orders your soon if interested, it will fit all HHR's except the 2.0 LNF engine.