We have had this system installed in our Nissan 350Z DE for several years and are extremely satisfied. Both the installation and the improved intake air temperatures were clearly visible during the tuning at HK-Power.
 
The Injen intake system features a long tube that places the filter in front of the core support behind the bumper, away from the heat of the engine compartment, to ensure optimal intake air temperatures. 
 
This offer does not include Hydroshield for the air filter. This is only necessary if the vehicle is frequently driven in rain and storms. We can confirm this from our own experience.
 
After installing this system, we recommend customizing the engine control unit. Please note that this is not permitted under the Road Traffic Licensing Regulations (StVZO).