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To my knowledge, there are 4 exhaust systems available for the F:

- JoeZ
- ISS Forged
- Borla

From what I gather reading different threads about each, Borla is probably the "quieter" one out of the bunch, followed by JoeZ, HKS, ISS? something like that.

in terms of the exhaust note, I'd suggest looking up youtube videos and hear it for yourself. Everyone got a different taste so it's hard to speak for you as to what a "deep" exhaust might sound like.

I haven't changed oil on the F yet, but when I do I will most likely use mobil 1 synthetic oil which seems to work great on my IS300 and is readily available.
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