Yes the Cobb has an air straightener, as does the stock air box, the straightener simply allows the MAF sensor to get the cleanest possible reading by streamlining and therefore eliminating turbulent air around the sensor area, there has been quite a bit of debate as to whether or not its purpose is required.
I have the COBB SF and the Hypertech tune as Dan mentioned, I personally find the best results are achieved using the HKS intake profile with my setup.
Can you be a bit more specific as to the issues you are having ?
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