I was Che's guinea pig many years ago with his sport manifold and twin chamber muffler. The set on my 2.5 increased HP and torque with dyno pulls before, during, and after the various parts of the install.
However, that drone of which so many have commented is actually deafening when it's raining or too stinking hot for the top to be down. My ears actually throb when I get out of the car.
However, most of the time I'm tracking my car now, and with a helmet on, the wail of the intake and exhaust combo is glorious and I don't need to look down at the tach at any speed to know if I need to upshift or if I can safely downshift.
I wish Che would make those straight pipes with two bung holes on each one so I could use them on my 2.5 (for track use only, of course!).
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