JAM isn't really going to solve your issue as the JAM would have been setup on a stock CT9 most likely. The plug and plays were a great way to boost power on an otherwise stock car. The moment you start modifying the car away from stock, it's impossible for an tuning company to tailor the ECU to your cars needs. Obviously the car can compensate with fuel, if it understands the AFR's and all those other parameters.
No real need to loop the solenoid, in fact, no real need for it to exist on the car since it doesn't control fueling, only the port for the boost sensor for the actuator.
It might be the ECU, gone faulty. Have you a boost gauge? It's not overboosting is it? As far as I know, the plug and play ECU's raised the fuel cut limit of the engine. So long as it is a genuine JAM ECU.