I plan to make my first mod a TBE for my 2005 STi. I'm still unsure of which brand I'd like to get, although I'm leaning towards the turboXS. Anyway, that's irrelevant. My question is, which form of EM would be best for me? I'm from southern california, namely OC, so there's a decent amount of tuners in my area. From what I read it seems as though a Custom Tuned ECU would be best for me. From my understanding a custom tuned ecu gives me the options of adding parts to the engine at my leisure and I can then take it to the local tuner to have them dyno tune my car for optimal performance. Is this correct? I don't plan to go all out on modifying my STi, but I will without a doubt have the urge to add bits and pieces here and there. Any help would be appreciated.