My shudder happened both before and after the Gryphon, in fact, it's one of the reasons I got the Gryphon. It is much more pronounced with the AC on, but it still occurs with the AC off. I have set the PID's to monitor input vs. output RPM's, and observed no change while I felt the shudder occur. My TFT never gets above 153, and I'm getting 18+mpg on the canned 93tune. I'll monitor and adjust the various transmissions settings once I get the 87perf tune that I'm waiting for.
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 current off road toy
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