To start with modifying let me explain some things about this thread. Honda's are pretty good cars for modifying. Despite legendary V-Tec there's a lot more to add on the car to increase performance, stability and handling. 1. Cold air intake: Either add a pod filter in the way that it doesn't suck the warm air coming from engine bay. This can be done by making a partition on the pod side. 2. Bigger exhaust system: You can add a bigger exhaust from exhaust manifold till the exhaust tip keeping in mind the emission standards set in your country 3. ECU Re-map: you can either Re-map the ECU with set of performance mods and be able to keep up with it. 4. Spark plugs and wiring: You can achieve a better performance only if the combustion is carried out in the cylinder efficiently. This can be done by adding better Iridium/Platinum spark plugs and changing the wiring if necessary. 5. Forced Induction: Adding a turbo charger or a Supercharger depending on the need of the car. If you want a constant power to run through the engine you might go for Supercharger or depending on the situation you need performance at certain occasion you would like to chose a turbo charging the engine. It includes a lot of effort. A turbine and a compressor , intercooler , blow off valve and appropriate AFM sensors.