Well its seems he knew that your car would be quick because he switched lanes, I came across an unsuspecting couple of kids in a hemi charger...not an srt. We took off from the light I had no idea where he waws but I could hear him squealing, i took off. Next light he says "whats in that thing?? :)
Yes it seem like 2 different issues, one is when you are on the gas hard and into the boost and maintain it you can get the noise/stall, and the second is when you let off the gas and get the fluttering noise.