Are there any aftermarket engine management/piggy back/ECU add ons that are CARB legal? It could be a standalone, a piggy back, or anything along those lines. I want something that has some decent functionality (like the MAP Sensor) and still be CARB legal. I'm trying to plan an upgrade path and I know that I can't get the 500-600rwhp reliably without changing some part of the engine management, whether it be fuel or air or something. Anyone have any knowledge of this? Any help would be appreciated. Thanks.