Great bolt-on upgrade
Sensor did what they claimed it would - improved low-end power. My HHR is 2.2 l & was very sluggish at low RPM, even considering it is a 5-speed. Car has noticeable improvement in accelleration, a big plus in traffic driving. RE: mileage improvement claim - marginal at best(ignore this part if you drive a Tahoe)Hwy is now 30.2 up from 29.9. Overall, is worth the cost & requires very little effort to install.
This intake is awesome. The sound is great, and I can't say enough about the performance improvement this has given my car. The only negative thing I had was during installation. It didn't go in as easy as the instructions say. I had to do some manuevering to get the heat sheild in place.