Header mod or no?
I currently have HFC, Greddy GT Evo catback, Z1 2.5" intakes & a tune and my output is 300whp 264 wtq. I find my car to be on the loud side while I do not get bothered by law enforcement yet for that matter, although I got used to the drone and noise inside the cabin. I'm looking for more power but I can't justify going forced induction since I rather keep that kind of money for a brand new muscle car for 2022 or 2023. I would like your input on what could be done to increase the power while not getting raspy or obnoxious loud. The car is mainly used for spirited driving and casual street racing.
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