Hks exhaust without downpipe is nice. Deeper but not too loud. I’d say AA downpipe would make more of a difference than the exhaust. I have the hks exhaust paired with the AA downpipe and it’s definitely loud but sounds amazing. Also pretty quiet when valve is closed
Got some sound clips of AA catted downpipe paired with HKS hi power catback. Downpipe was installed on Monday by @Speed Logic and I couldn’t be happier with their work.
First clip is a cold start and second is warmed up with valves open