I only have the duty cycle at 20%, there are no air temp compensation, I try hooking up a greddy profec-B just to make sure it not the boost setting in the ecu thats doing it. map limit was set to 400kpa, rpm is 9000, launch off antilag off . RPM looks smooth so it cant be trigger error it seem like when duty cycle inceases this problem occurs, but only around 6000rpm. it not a cut it just falls afew hundred rpm then back up. what confuse me most is I seen another Link ECU call Vi-pec in a friends 300zx does the same thing. anyone here runs over 600whp on Link ECUs?