Cobb is currently doing "testing" to see if it will work on not. Do a search and you will see quite a few hreads discussing this before this one. In short, people have done so and the logs seem to be alright. Why don't you download openecu and do some logs for us if you are so concerned and we can check them out for you and then draw more generalized conclusions for the masses.
make7upyours728- of course that makes sense, you pulled out the resonator and put a short ram on. You are hearing the turbo, and since there is a long application of high boost under load you are hearing your turbo... be excited, that's what you bought the intake for since there isn't any hp gain without some custom tuning and a good heat shield.