Mack superdog Posted March 15 Share Posted March 15 I have a 15 mp8 when driving at a steady throttle it sounds like vgt is opening and closing is that a possibility if so I was wondering if I can unhook vgt actuator somehow to test if that’s the problem Quote Link to comment https://www.bigmacktrucks.com/topic/75289-15-mp8/ Share on other sites More sharing options...
red bumper Posted 15 hours ago Share Posted 15 hours ago Just wondering if it is still stock on the program and turbo? Quote Link to comment https://www.bigmacktrucks.com/topic/75289-15-mp8/#findComment-572033 Share on other sites More sharing options...
red bumper Posted 14 hours ago Share Posted 14 hours ago Had the same issue on an international 9200 ISX 500 and after changing the turbo and VGT and CAC and scratching my head for almost a year I finally figured out it was a bad delete program on the ECM. Reflashed the ECM and havn't had that problem since. Quote Link to comment https://www.bigmacktrucks.com/topic/75289-15-mp8/#findComment-572034 Share on other sites More sharing options...
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