Pros
Powered by a 2.4-liter power plant, our initial baseline run netted 140.5 wheel hp on the factory rated 160hp engine. The vehicle we tested for this power page was equipped with a full factory-upgraded TRD package. The TC was outfitted with 18-inch optional wheels, TRD add-on lip spoiler for the front and rear and a TRD wing.
Cons
With the luxury of possessing more torque than horsepower, thanks to the large displacement engine, the Scion's rpm band seemed rather short with a disappointing 6500 rpm redline. Equipped with a set of 18-inch rims hurt our dyno numbers ever so slightly, but for the record, it's a fact that most import enthusiasts sport 18's on their rides today.
Notes
Scion's aggressive campaigning for the import youth market has paid-off well for their parent company, Toyota. Who doesn't love an economical vehicle that's easily affordable straight out of college?
Temperature
Air temperature: 74.5 degrees Fahrenheit
Pros
It doesn't take a genius to realize the factory Scion exhaust system was built with economy and emissions in mind. The tight press bent piping and unorthodox muffler not only quiets down the vehicle but also hurts horsepower in the process. The GReddy EVO2 is a catalytic converter back, full-stainless exhaust system that improves on the exhaust flow, using a less restrictive, straighter designed piping.
Cons
There is not much to complain about with the exhaust. Unless you're an old man and can't appreciate a nice exhaust system.
Notes
GReddy's EVO2 exhaust uses a revised mounting point on the factory chassis, which can easily be modified using the supplied hanger to mount the exhaust doughnut. Using the new nuts and bolts, the Evo2 bolted up within record time and gave the TC an aggressive demeanor from the tail section.
Temperature
74.9 degrees FahrenheitTemperature difference from previous run: +0.4 degree Fahrenheit
Installation time
60 minutes
Tools
12mm and 14mm combination wrench, 12- and 14mm socket, ratchet, WD40, screwdriver
Parts
Exhaust, nuts, bolts, exhaust hanger, GReddy emblem, sticker, instructions
Tune it Power is everything
| 2500 to 3500 HP range: 1 to 3 | 2500 to 3500 TQ range: 2 to 3 |
| 3500 to 5500 HP range: 2 to 4 | 3500 to 5500 TQ range: 1 to 4 |
| 5500 to red line HP range: 5 to 3 | 5500 to red line TQ range: 2 to 3 |
| Peak HP 144.0 | Peak TQ 151.8 |
Pros
Injen's SP2110 Intake kit has the ability to be used as either a cold-air system or a short ram intake. We opted to go with the short ram setup to see what horsepower gains were picked up in the process. The Injen intake is developed using a 6160-aluminum alloy pipe and a built-in velocity stack. The most appealing component of owning an Injen intake is the CARB EO number proudly stamped on the face of the pipe.
Cons
While the pictures on the instructions made the filter install look like child's play, it took us some to finesse and properly align the pipes and filter to clear the driver-side inner fender and install the vibrate mounts.
Notes
While power slightly dropped off at 2500 to 3600rpm, we considered this a non-issue due to the fact that most of us don't see bellow 3500rpm when driving. And if you are, then you need to quit granny shifting! Significant horsepower gains were picked up from 5800 to the 6500rpm redline with an addition of 8hp on top. Torque numbers picked up from 3700rpm and kept its increase until redline over the previous exhaust install.
Installation time
45 minutes
Tools
10- and 12mm combination wrench, 10- and 12mm socket, Phillips screwdriver, extension, ratchet, pliers
Temperature
Air temperature: 76.1 degrees FahrenheitTemperature difference from previous run: +1.2 degrees Fahrenheit
Parts
Two piece aluminum intake, urethane air filter, vibrate mounts, hose clamps, silicone hoses, nuts and bolts, stickers, instructions