Try to be more specific about what you are looking for next time.
If you want a useful answer, go to a forum that is dedicated to the type of car you wish to tune and look for some help there.
ECU electronics differ between make / model / year. You're not going to make a ROM chip that works with all of them. Some factory ECU's are just not reasonably easy to modify, and some are really easy.
So the answer to your question, is, yes, we can help you, if you have a specific question about the electronics, but your going to get better answers in car performance forums.