Loudest exhaust for FD3S = get a 3 inch SUS 301 stainless steel, down-pipe straight to outlet. No cat, no pre-silencer, no muffler. The thinnest metal you can get.
If you want it louder, have the pipe out the side of the car instead of at the back. Just remember which side the pipe is out as you will cook anybody's legs when you drive pass.

Loudest exhaust for FD3S = get a 3 inch SUS 301 stainless steel, down-pipe straight to outlet. No cat, no pre-silencer, no muffler. The thinnest metal you can get.
If you want it louder, have the pipe out the side of the car instead of at the back. Just remember which side the pipe is out as you will cook anybody's legs when you drive pass.

Sportauto with the famous driver Horst has driven the new Skyline on N-ring.
*7:50 --- 157.787 km/h -- Nissan GT-R, 480 PS/1750 kg, Horst von Saurma, partially wet track (sport auto 12/07)*
Horst von...