When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
HI,I am experiencing issue similar like misfire but I found that it is "on purpose" ECU by some reason is doing 100% Spark Cut for unknown reason, in random RPM.I am able to simulate conditions like you have lifted car spinning engine on 5 gear and doing load by brake. It would be considered as low-medium load.
Any ideas guys ?For example I didn't found " spark cut" except REV limiter and Launch control and didn't seen that also within that "calculation" view...Are reasons/functions for it documented somewhere ?
Cause has been found.Anytrim Redline RPM Trim for Lambda target 60% TPS and Lambda target 90% TPS was used. In meaning of engine protection. However it was doing these cuts arround 15% of the TPS so it is not configured as I think.