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I have a 2013 FRS, I had rattles and groans from the trunk roof welds, used some stinger sound deadening over them and they stopped. I have my doors done too, and some over the rear wheel wells behind the rear speakers, and lastly I put some dark foam tape on the rear deck 3rd brake light where it meets the glass. Only rattle I have currently is either in the passenger door, or somewhere in the roof on that side, I haven't looked too much but it only makes noise going over speed bumps or really rough road. for reference im using a JL 10" on a 500W rms, but tuned to 400, and usually degained to 300, so long story short, you're prob going to encounter more issues than I by virtue of pushing more power and air. what sub are you pushing with 2kW?
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