Pros
The greatest thing about the Evolution is its all-wheel-drive drivetrain. Thus, no matter how much power you generate, you can bet all that power is going to make it to the asphalt. In Part One our Evolution was able to generate 21.5 horsepower to the wheels with three simple bolt-ons. The roar of the GReddy Racing Ti exhaust system makes this land shark sound menacing and the AEM EMS system allows us to fine-tune the 4G63 engine for maximum horsepower as we add more performance parts on the Evolution
Cons
The bad part about owning an Evolution is when you start adding parts to the vehicle and make more power; you end up wanting more. We already generated over 20 hp to the wheels but that is far from enough for the Mitsubishi.
Temperature
72 Degrees Fahrenheit
Notes
Our original baseline of 248.0 horsepower was bumped up to 269.5 horsepower to the wheels with the three bolt-ons from part one.
Parts
DC Sports stainless-steel 3-inch downpipe, gasket and hardware.
Tools
12mm and 14mm sockets, ratchet and extension
Pros
Installing the DC Sports downpipe enables the turbocharger to spin more freely with less backpressure. We saw an increase of 1 psi of boost pressure when we added the downpipe. The 4G63 now really started to sing from 5000 rpm to redline with power increases as high as 25 horsepower to the wheels.
Cons
The DC Sports downpipe is not a street-legal piece. The downpipe removes the factory catalytic making it a track-only affair. Also, with the downpipe, the exhaust system will be noticeably louder due to the lack of a catalytic converter (although that is a "pro" for some folks).
Temperature
71 degrees Fahrenheit Temperature difference from previous run: -1 degrees Fahrenheit
Installation Time
45 minutes
Notes
Allow things to cool before attempting to swap out the downpipe. The dowpipe and catalytic can be removed as a single unit but the lower factory tie bar must be removed.
Pros
The DC Sports turbo manifold is an impressive work of craftsmanship. The manifold is constructed from tubular stainless-steel and features a long runner merging the cylinder 1-4 and 2-3 together. The DC Sports manifold positions the turbocharger in the factory location so there is no need to swap out any of the factory components. With the tubular manifold design there is less restriction in the exhaust flow allowing the engine breathe much more freely and in turn generating more power.
Cons
Like the DC Sports downpipe the header is not 50-state legal so the police can write you a ticket for it. Additionally, the factory heat shield will not go back on, but one can be easily fabricated to cover the manifold.
Notes
If you don't like being treated for second-degree burns put a fan on the manifold for about 20 minutes before attempting to remove it. Also a little WD-40 on the nuts and bolts will make removing them much easier.
Parts
Turbo manifold and hardware
Tools
10mm, 12mm and 14mm sockets, ratchet and 12mm and 14mm wrenches.
Temperature
70 Degrees Fahrenheit Temperature difference from previous run: -1 degree Fahrenheit
Installation Time
60 minutes