exhaust will make it growl all the time... my HKS has an awsome growl, similar to the stock exhaust, but louder and all the time.
but, with any setup, the colder the engine is the louder it will be...
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06' 6mt / Z-tube / JWT Popcharger / HKS Hi Power Exhaust / Hornet 564T w remote start / 15 % tint / Custom Kicker L5 w Kicker Amp / Passport x50
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