Did you buy the car as a modified car or stock? How much did you pay?
If it is billed as a stock car, I would bring it back, there seems to be some kind of tune on it which my guess is a result of this car being modified and returned to stock to trade in.
There should have been an oem resonator after the DP before the Y pipe. If they brought it to a muffler shop they probably welded in some other resonator.
I wouldn't necessarily go out and get an aftermarket tune to fix a problem on an OEM car.
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