Annoying boost feedback noise

[Crazy D]

When I let up after being under boost, there's an annoying noise that comes from the canister area of my cheapo KB ram air system. Sounds like the canister or the tubing rattling against something, and it's so damn loud I always instinctively think I've broken something. I can't exactly pinpoint it. But people tell me it's "normal". It never did this before, and I can't figure out anything I may have changed down there to cause it to spring up. If it's "normal" than someone here should know what it is....

 

[MeanBuicks]

That is a normal sound caused by the air backing up in the inlet tract. In your case, the KB system may be amplifying the sound. The factory inlet plumbing and airbox muffled that sound quite a bit.