Installed the FIPK in about 1 hour and noticed a true difference in acceleration. There is a slight pause when you nail it, but after that it sounds like a Tornado under the hood. Not to loud, it's a very comfy

sound. I would recommend purchasing this for a nice performance upgrade. I bought mine on E-Bay for $225 with shipping included Part 63-1088. I can't see spending over $500 for a Banks exhaust system when I can get the Magnaflow or Flowmaster installed for around $250. With probably the same performance increases. That's the next purchase on my list.