Quote:
Originally Posted by KShirza1
Thank you!
If i understand correctly, they design the muffler to fill the area to avoid wind turbulence from the rear bumper. The Z's stock and nismo mufflers are designed in the same way.
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Yes they are and I have always hated that too...guess it's why my first mod to both Z's was the FI exhaust! 
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2012 Z-SOLD
2014 Nismo #565 Fast Intentions CBE/HFC/Swift/SPC/RJM/H&R-15/20mm/Z1 CAI/Headers/Intake Manifold w/Uprev Tune 328.31whp/263.64tq
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