Originally Posted by olsen726
using the factory 2.5i ecu/ rom.
im pretty sure the ecu doesnt know that the car is boosting..that you just tune it how people would tune there older na/t subarus with a piggyback
i could be way off though. i am still trying to learn this as i go
Does the stock MAP sensor read high enough? Can you scale the necessary tables? I've tuned a turbo car on an na ecm. Not a Subaru but It can be done. Not ideal but it works.