[RMRC]

I fear I may be experiencing a bit of detonation during full throttle 6k rpm or higher 1-2 shifts. When I go for a gear change I hear one “ping” as when a car is pinging from detonation. I’m testing a tuning device and am wondering if you think what I’m hearing is detonation or something else? For the purpose of the question I won’t mention the manufacturer of the tuning device since I’m hoping for totally unbiased opinions as to what this may be. If you think it’s detonation I want to take it out asap.

I've experienced the same thing on both Chevron 91 and Shell 91 so I don't think it's a case of bad gas.