did you try getting a TPS that reads boost. i know when you run boots you have to switch the unit in NA cars to Boost cars, just like boosting a na civic to a turbo one. the computer can't read boost so it gets confused with the cars starts boost aka when you put your foot on the petal to rev the engine. its making boost and the computer goes crazy and shuts the car off. try looking up for a sensor that reads boost, its the TPS OR THE MASS AIR FLOW ONE i'm sure its the TPS thought. i know that was the problem we had with a civic and everyone told us we had to get it custom but we spend like 40 bucks at pep boys and never had a problem since.