I am currently running an 04 USDM Evo 8 in my 2G eclipse. The Rom loaded now is 99270000 because that was the file that was given to me to run, and works good with no CEL. What I want to know is if it is possible to run any evo 8 rom in my current ecu, or if there is only specific ones?

I am looking to take advantage of all the patches that available specifically the Speed density patch, but there isn't a patch for my current rom.

Any and all info is greatly appreciated.