Injen is a Hot Air intake, in that it warms the incoming air even more than ZZP. DDM comes with a heat shield, and the Stock Airbox actually draws air in from the fender, making it the only Cold Air Intake currently on the market for the Sonic.
If you really want Cold Air, then try pulling the Saxaphone/Snorkel out of the fender, or to be even more aggressive, run your own snorkel in from the fog lamp bezel or somewhere else.
I guess with some work the DDM system could also be "cold air", drawing air in from the same fender port that the SAB uses.