There's no such thing as a magic chip that makes acceleration faster.
You don't need to worry about ecu's yet. If you get a different ecu the car will run like shit, and if you just set vtec a little earlier it'll hurt fuel economy more than anything on a stock engine.
The point of chipping your ecu is to put in a programmable chip which enables you to tune and manage your build. You don't need one unless you've got a forced induction set-up (ie. turbo), or a really bad ass all-motor build including cylinder boring, aggressive aftermarket internals, etc. You chip the ecu to tune your engine when you've taken it much further than stock, so you can make everything work in harmony to bring out the fullest potential while also not damaging the engine.
Do a lot of research, this site is full of information. You've already got the basic intake, header, exhaust set-up, now decide for sure what you want to do next. You said turbo, so:
1. Determine if your engine can handle it. Have a compression test and a leakdown test done, if it passes, you're good.
2. Set a power goal. (be realistic now, anything above about 220-230 WHP and you'll need an engine build)
3. If below 230 WHP, decide on a full kit or making the kit yourself (which is cheaper, and there's tons of info on here for it)
If above 230 WHP, do some research and decide what to do to get your engine ready to handle it.
4. Engine management, THE MOST IMPORTANT PART of any build. At the least, get a chip for your ecu. You can get a stand-alone system like AEM for a pretty penny but it's better. And find a good, reputable tuner to tune your engine immediately so you don't blow it up.
Hope that helps some.