Hi, I have 3 Supper buggy class 10 that we convert to Ecotec Engine. My engine and ECU came from CBM and running fine (ECU E39a 2012), I did some MAF tunning and SD tunning on it. the second came for Alpha Motor Sport (rebuild engine) and the 3rd one from a Jung yard (ECU E39 2016) the issue I have with the 2 last is the retune of the commanded throttle. When I go push the throttle pedal and release it, on the 1st engine the commanded throttle signal goes low rapidly to cut the engine speed, but on the 2 others engine it takes times to cut off, look like a filter and rev take time the lower down... I compare both ECU with the 1st one that running fine I copy all the setup from the first to the 2 others. any idea on how to fix that issue. note the air intake is different on the 3 engines...

thank you very much