Power Pages: 2003 Subaru WRX

Dyno 3: DC Sports Stainless-Steel Exhaust
208.5 HP 199.3 TQ

Pros
This exhaust is handsomely finished and has a sweet exhaust note. Installation is a snap, and all of the components come together seamlessly. Peak numbers were up ; we gained 2 hp and 5.4 lb-ft of torque. We saw a noticeable power gain between 5500 and 7500 rpm, with as much as 8 extra hp and 7 lb-ft of torque. This was a straightforward installation without any need for MacGuyver skills.

Cons
Don't blip the throttle around the police. DC Sports' exhaust sounds deep and manly, but at wide-open throttle, it will definitely get you noticed.

Tools
14mm combination wrench, 14mm socket, ratchet and WD-40

Temperature
Air temperature: 70.8 degrees Fahrenheit
Temperature difference from previous run: -5.6 degrees Fahrenheit

Installation time: 30 minutes

Parts
Stainless-steel muffler, B-pipe, gaskets, bolts and instructions

2000 to 3500 HP range: 1 to 4
3500 to 5500 HP range: 1 to 2
5500 to red line HP range: 0 to 8
Peak HP 208.5

2000 to 3500 TQ range: -2 to -5
3500 to 5500 TQ range: -5 to 4
5500 to red line TQ range: 0 to 7
Peak TQ 199.3

By Richard Fong

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