ah i see you should be fine so the jam ecu should remove the fuel cut i wouldnt worry about it boosting up to a bar but with the actuator you can set it the way you want it, the cat will cause a good bit of back pressure on the engine if you want to run high boost the whole time i would invest in a new mani and decat to help the engine breathe better theres a restricter in the standard mani can cause failure of cyclinder number 3