Dyno3
Njen Super SES Exhaust Systemair temp @ 69 degrees FahrenheitTemperatures difference from previous
run: -1 degrees Fahrenheit
Peak HP. 200.6
Peak TQ. 162.7
| 2000 to 3500 HP average: 1 to 3 | 2000 to 3500 TQ average: 1 to 4 |
| 3500 to 5500 HP average: 0 to 4 | 3500 to 5500 TQ average: 0 to 3 |
| 5500 to redline HP average: 3 to 10 | 5500 to redline TQ average: 3 to 4 |
| Peak Horsepower: 200.6 | Peak Torque: 162.7 |
Pros
The Injen Super SES system is a very nice system with robotic TIG-welding and mandrel-bent piping. The flanges are all CNC machined, embarking on a true, high quality system. All the components are polished to a shiny finish. The Injen system was bolted on without problems, generating a unique tone from the boxter engine. Not only did the system look good on the Subaru it also paid dividends on the dyno, generating an additional 9.2 peak horsepower. We noticed the WRX engine was boosting slightly higher than the stock system due to the freeflow design of the Injen unit. Our datalogging of the boost pressure showed an increase of 0.5-psi higher than the previous run without the Injen exhaust.
Cons
The Injen system is not 50-state legal so for those who live in areas with strict law enforcement, the polished stainless-steel muffler will be a dead give-away to all the pigs out there.
Parts include
Stainless-steel muffler section, stainless-steel piping, two three-inch gaskets, miscellaneous hardware, stickers and instructions.
Tools required for install: 12- and 14mm wrench, 12- and 14mm socket, three-inch extension and ratchet.
InstalL time: 60 min
Dyno4
Injen 3-inch Stainless-steel downpipeair temp @ 70 degrees FahrenheitTemperature difference from previous run: +1 degrees Fahrenheit
Peak HP. 218.7
Peak TQ. 173.9
| 2000 to 3500 HP average: 3 to 5 | 2000 to 3500 TQ average: 8 to 16 |
| 3500 to 5500 HP average: 4 to 10 | 3500 to 5500 TQ average: 6 to 9 |
| 5500 to redline HP average: 8 to 20 | 5500 to redline TQ average: 8 to 10 |
| Peak Horsepower: 218.7 | Peak torque: 173.9 |
Pros
Like the exhaust system, the Injen downpipe is also a very nice piece of work. The collector is a cast stainless-steel section that is welded directly onto the three-inch, mandrel-bent stainless-steel piping. The flange is again CNC machined and robotic TIG-welded in place. The system fit perfectly, without any hang ups at all.
Cons
Removing the stock heatshield is a pain in the butt. You must remove the intercooler in order to remove the heatshield. In order to remove the heatshield there are (10) 10mm bolts holding it in place. Once the heatshield is removed the rest was a piece of cake. Be sure to soak the bolts with WD-40 before trying to remove them unless you like having stripped bolts.
Parts include
Three-inch stainless-steel downpipe, stickers and instructions.
Tools required for install10-, 12- and 14mm socket, ratchet, 10-, 12- and 14mm wrench, standard screwdriver and WD-40.
Dyno notes
This is what Power Pages is truly about, three products equals big power gains. We were able to generate an additional 38.5 horsepower and 18.7 lb-ft of torque from three simple bolt-ons.
By Jasper Chan
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