Concerning Noise Coming from Driver Side of the Engine

[Diegogarx]

Should I be concerned or am I over reacting? Currently running the car on JB4 map 5 with E30 blend. Not sure if it is the switch in fuel that is causing it but this is my first time hearing this sort of noise. Now I will say that I switched over to E30 and Map 5 about 4 days ago from the time of making this post, and sitting at about 4~ gallons of fuel left so I’ve used more than half of the tank already. As far as running the car hard, I did 3-4 50-120~ pulls with some friends Thursday night (currently Saturday afternoon). Anyone else experience similar sounds before or am I overthinking it? Also included some logs: one of a 60-120~ and the other of just freeway cruising just to see if there is any correlation between the two. Thank you!?

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[lucky phil]

I've never heard a B58 running under the hood and sound tracks can be hard to analyse with regards to "noises" but after 45 years of building engines there's nothing I heard that raises alarm bells there with me.

Phil