Speedlab made some parts for Mitsubishi Philippines Mirage Gymkhana series. These are apparently now available to the public. All items were designed for the 3A92 (1.2L) engine.
More info here: Mitsubishi Mirage Gymkhana: A taste of things to come
The first item they developed is an intake. This isn't your ebay slap on deal (which was shown to decrease power). This was actually dynoed and designed properly to maintain mid range torque, but increase high rpm power. The price is P7,500 ($173 US dollars).
Most people think making more power is as simple as slapping on a cheap intake tube and air filter. Here, that actually results in a big loss of midrange power, which leads to bogging when you shift gears. The specially designed resonator-equipped Speedlab intake minimizes this effect, while providing a solid 3-4hp gain at high rpm.
The next item available is a long tube header for the 1.2L engine. This piece is going for P10,500 ($243 US dollars).
A long-tube HotPipes header gives better exhaust flow, allowing each cylinder to exhale spent exhaust gases freely. It brings the total power bump to 4-7hp across a wide range of engine speeds.
The last item is a retune using a Unichip piggyback ECU. Its the most pricy at P30,000 ($693 US), but also gives the biggest gain (in combination with the other pieces).
...Speedlab offers a Unichip piggyback computer for P30,000 that boosts torque by 10Nm across the entire power band, and extends peak power all the way to redline. This gives more gain than any other bolt-on modification out there, and should help you put a hurt on those pesky 1.5-liter cars at the next track day.
cleaned up dyno chart
Here is a dyno chart which shows how the modifications effect your power output. The green line is a stock engine, the blue is with the intake and header installed. The purple is intake, header, and the ECU tune.
I also emailed Speedlab about part availability. They said the header is being put into production and will be available around December 2013. The intake kit is currently available as is the ECU tune.