Hello I’m just on here to see if I can have my car fixed I will upload a video you can watch hopefully it’ll helps but my issue is the car will be chocking and the rpms will lower and once it gets low enough the car will shut off

Have not checked the fuel pressure I’ve replaced fuel pump about 30,000 miles ago I’ve got a fuel filter i will replace tomorrow and also I guess check the fuel pressure, the codes nothing shows up which is weird, engine is replaced with the same one lt1 had it now for a year I put in headers about two months ago so no egr and trans is auto also been rebuild the same time as the new engine so I’ve already put spacers between the icm and the new icm, cleaned iac and throttle body, I’ve also put a spacer to increase idle it seemed like it helped but it started to acting up the next day and I’ve also had to put a little more coolant