It sounds deeper with a nice rumble with the NISMO muffler I'll post a sound clip soon. I think the ecu is "learning" the more free flowing exhaust. The car should be taste after a few days. The same thing happened when I installed the muffler.
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2010 40th Anniversary ll GT-R start button ll GT-R map lenses ll Plastidipped fangs and rear valence ll OEM foglight & switch ll Motordyne E370 Cat back ll Motordyne ART Pipes ll Takeda aFe Attack CAI ll Sprint Booster ll Z1 34 row Setrab oil cooler ll Z1 Motorsports M-Spec Shift Knob
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