[aliangF85]

i noticed that when im driving my f85 up a slight slope and push the accelerator a bit harder (but not to a point where the car downshifts), i get this noise that sounds like pulling a chain.

I followed up by bringing the car to the dealership a couple of days later where the mechanic went with me for a test drive and he mentioned that this is called "pinging" also known as turbo knock cause by carbon build up or bad octane fuel. He said try taking the car to a highway and drive it "spiritually", so i did, but still continued to get the pinging sound and can recreate the sound 100% of the times when i need to.

has anyone experienced this issue? Note: I fill up using Chevron 94 octane.

Thanks,