Need help since I removed CAT and raised fuel pressure I have had a problem with the car wanting to die when decel. It idles and runs great and the BLMs are pretty close to 128. When decel (coming to a stop) the RPMS drop low (sometimes low enought that the engine will die) and it will surge a couple of times trying to achieve idle. Once it achieves idle it is fine and no longer surges. Any suggestions?

 

Change some IAC setting like the Decay and others. I modled mine after the IAC settings in the S_AUJP and my car runs better than ever!