1ar has only an auto ecu. I plan on using a stock ecu to pass emissions and all that junk. Other swaps I would lose this ability or have to cut up the car. Things I don't want to do. Mainly considered the 2ar for that purpose. Not looking to build a world beater engine combo. Just want something fun to drive around in that's simple. I'm kind of over the fact of dumping ten's of thousands of dollars into a car and then bleeding when it comes time to sell. Guess I'm growing old now days and just want things to work and not send months on stands. Been there done that over it all.