General Need help tuning

[Ethan_zdon]

Recently had to replace some leaky injectors and decided to go fic 775cc and need to tune. I have a MD321912 T and I have no clue how to tune fuel delivery without haveong to get a new ecu. Any programs or ways to do this?

 

[Mello]

Your MD321912 T is the OEM ECU. It isn't tuneable from the factory so you'll need to at minimum get an ECU with ECMlink installed. The ECU needs to be an EPROM CPU or be socketed for the ECMLink chip. Your MD321912 T is not an EPROM OEM CPU so needs to be socketed. Easiest thing to do is get 450cc injectors that were the OEM original size and would work with your ECU without needing to tune. Piggy back AFR boxes could help but 775cc is just a little bit too big for piggy backs & would be out of range.