I'm trying to find someone who has done an ecu tune after converting to a 4.0L and adding- headers,exhaust,200 cell cats x-pipe, ipd plenum,gt3 throttle body,intake.

Im basically looking for advice on this mod.

sean

 

The mass air flow tables will need to be changed to take on the additional displacement.
Timming tables should be ok, and the fuel tables run closed loop on the ecu, so they should be ok too.
Call EVOM in az, they should be able to take care of you.