Its hard to get good fuelling throughout the rev range on a MFI car.

Being perfectly honest, having the "i might just drive it as it is"a ttitude is only going to cause you more problems its not good to be running around running rich.

Do yourself a favour and just put it away until you've saved up, your just guna cause more damage and up the bill more.

Theres nothing saying you can't take off all the original parts and keep them and EFI it, you can always swap it back.