ARK DTS or GRIP ?

dP3NGU1N

Once the car is warmed up, the idle is incredibly silent. Which is fine by me. I don't want it making a lot of noise unless I'm flooring it anyway. In fact, it's down right civil until about 4000 rpm. There is some rumble if you're standing behind it, you can really hear the cylinders firing. However, it's pretty quiet in the cabin. This is coming from someone who has his entire interior stripped out in the hatch area.

With some effort, I can hold a mobile conversation at highway speeds. Actually, most of the noise in the cabin is still coming from the tires rather than the exhaust.

I think the gains come mostly from the less restrictive cats. Honestly with the same diameter headers, you're not looking at much. The principle is to create less restriction in air flow and I'm not certain that an exhaust adds as much to that equation as HFCs or test pipes. The key is that exhausts are basically trumpets for your engine, and these sound great, IMO. In short, butt dyno is mostly the same if you swap exhaust only. But you certainly sound like you're going faster.

You're going to want 3" piping with a turbo. HKS is the answer for that. Or custom exhaust.

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35% Hooper Optik | Takeda Attack CAI | F.I. HFC | Hotchkis Sway Bar | Stillen 24row | OS Giken Super Lock LSD | TK Shift Knob | EVO-R Carbon Diffuser