I have the full system with hfc's on my G37 coupe and it sounds like nothing you ever heard. Do not get it with hfc's or tp's because it gets very raspy over 4k RPM. If you shift around 2.5-3.5 the system sounds amazing with no rasp, anything over that your ears will suffer and it will get raspy. Funny thing is, I never took it past 5k rpm lmao. Ive gotten a semi headache every long highway ride over 1.5hrs so thats why im removing the hfc's and then it should sound perfect. Its a head turner and a compliment machine lol. I got it because the sound is just incredible and its very very rare exhaust on my G. Any more questions just shoot em.
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