Ok here's what I got. 2010 5.3/2007 E38/Th400 swap into a Mazda. When I tuned a Gen3 5.3/Th350 before without a wheel speed signal with foot off the throttle it would start pulling the STIT in the negatives to try to bring the rpm back to idle on decel and cause bogging/dying on quick stops. Is there a way around this with a Gen4 setup not using a tcm and not having a wheel speed signal?