the catalytic converter limites the car around 10whp, so you must get an aftermarket extractor. go with a arc air filter or maybe a mugen airbox. ecu makes alot of difference but dont think any tuning shop is really good at tuning motec m800, stick to maybe mugen ecu or maybe spoon ecu. stock ecu air to fuel ratio is very bad, the curve goes down tremendously so its either too much air or too much fuel, not sure which one. maybe you could dyno ur car and send the ecu to hondata for reflash but it will take some money. i think its still best to stick with mugen ecu with 9200 rev cut.