Just purchased a 2020 Ram 1500- love it. Technically it was used because it had 4900 miles on it. I've noticed, as best as i can describe a ping/chirp/fluttter/rattling sound on acceleration at low speed. Sounds like its coming from passenger side. I've only had the truck for about a month, and just noticed it this week. It sound like an old engine with 200,000 miles on it! I read a little bit and saw info on 89 fuel, i'll try that- I've been using 87. Troubling thing is I called 2 dealers, neither of them are the one I purchased it from , because they are an hour away, but both gave what seemed like a canned response "that's how Hemi's are" Not what I wanted to hear!!!! But the noise is driving me nuts. Can't tell if its coming from motor or exhaust. Thoughts.