Hey guys sorry if this is a noob question.

I was wondering what is required apart from I/H/E to be able to tune your car for more power with an aftermarket/piggyback ECU? I'm thinking about getting a HONDATA S200 or something of similarity for my DC2 VTi-R.

So do I need to change to different injectors, ignition and things to really notice a difference? Are there more things I should know? and will the HONDATA plug right in?

Also opinions on different ECU's. Pro's and cons?

Thanks