DYNO 3
GReddy EVO2 stainless-steel exhaust
112.9 HP / 97.5 lb-ft
Exhaust
This is a really sweet exhaust in both appearance and sound. It's not too loud and features mandrel-bent tubing and a mirror-polished finish. The offset canister hides most of the muffler under the bumper so you only see the exhaust tip. It has great clearance, especially on lowered cars. We made 112.9 hp and 97.5 lb-ft of torque. Fitment and finish are first class, pretty much what you'd expect from GReddy. And it's street legal.
We gained back some low-end torque and gained some mid- and high-end torque and horsepower. The exhaust breathes better than stock without sacrificing too much torque-giving backpressure. Temperature again rose between runs. Remember to use WD-40 on all of your hangers and bolts. The stock exhaust bolts were pretty rusty on this East Coast car.
Parts
The GReddy EVO2 lists for $629 and includes stainless-steel muffler, B-pipe and S-pipe, gaskets, GReddy badge, warranty card and bolts
Tools
12mm and 14mm combination wrenches, 14mm socket, ratchet and WD-40
Installation Time
45 min
Temperature
Air temperature @ 74.2 degrees F
Temperature difference from previous run: +4.7
2000 to 3500 hp range: 0 to 1 / TQ range: 0 to 2
3500 to 5500 hp range: 0 to 3 / TQ range: 0 to 2
5500 to redline hp range: 2 to 4 / TQ range: 0 to 3
Peak hp 112.9 / TQ 97.5
DYNO 4
GReddy Stainless-steel headers
118.9 HP / 99.9 lb-ft
Again, outstanding fit and finish from GReddy. The headers added 6 hp and 2.5 lb-ft. Air temp rose another 4.3 degrees. The headers have a CARB exemption number welded right onto the pipe, good foor those times when you'll have to explain your engine bay to the po-po.
Removing the stock header can be tricky, especially since Honda mounted one of two oxygen sensors right into the four-into-two section of the stock header. Wait until it all cools down, then remove the heat shield and the splashguard, unplug the harness, and drop the stock unit out as one piece. You can then easily remove the stock O2 sensor and transplant it into the GReddy unit. Neatly run the O2 extension from the back of the motor to the front and reattach it to the main wiring harness. Don't forget to wipe down the stainless-steel surfaces before running the engine, or you'll find your fingerprints permanently inked into the pipes.