I thought it was more of a NVH item. My 2001 ZX3 didn't have hood insulation (it was phased out mid 2001), and after 30,000 miles, its still fine.
January 2008 Focus Fanatics ROTM
2003 Ford Focus ZX3 2.3l N/A = 221 HP, 162 ft-lbs, firstname.lastname@example.orgMPH
2006 Ford Fusion 2.3l Turbo = 244HP, 247ft-lbs
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