way to bring the thread back from the dead...
as with any custom ECU system, you will have to do exstensive programming and tuning to get the new ECU to perform as well as the factory ECU.
you can ask the supplier if they have a pre-programmed default setup so the car will at least run when you plug it in.
as far as the wiring, if you order the correct ECU, you will have minimal modifications to your wiring, an may be as simple as plug and play...
In my opinion, if you have to ask this question, I do not suggest you do this mod. spend a good month researching and answer this question for yourself before you buy!
by the way, are you sure this is the right area to post your question? the GA16i forum?
Last edited by Regibus; Jan 4th, 2012 at 08:47 PM.