just connected to 90 iroc-z ecm 1227730 for first time. eng running condition is perfect. all sensor data looks normal. getting random positive and negative flucuations in dashboard monitor response curves with no corresponding eng hiccups. shutting down and reconnecting has no effect. anyone seen this and fixed this glitch ?
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took car for thorough test drive. recorded sensor data looks normal. set tunerpro in monitor mode. random glitches stopped. when i switch to dashboard gauge display glitches continue. very irritating when trying to diagnose problems.