S4 ko3 Stock exhasut = 76.5dB (paz)
S4 ko3 stock exhaust = 77 dB
S4 ko3 turbos stock DPs and 3" miltek catback = 77.5dB (does sound deeper though)
S4 k03 turbos, RS4 downpipes no precats, stock RS4 catback = 78dB (GrahamS4)
s4 ko4 turbos, stock s4 DPs no precats, 3" single milltek catback = 78.5db
RS4 precats gutted, miltek catback resonated = 80.2 dB (jarv)
s4 200 cell miltek DPs + 3" milltek catback = 80.8dB
Renault Scenic - the Ash express = 81.3dB
S4 RS4 Downpipes no precats, milltek dual catback = 81.9dB (CliveH)
S4 nocats full custom(smallish bore) k04 = 82.1dB (Dr_Wimpkins)
S4 Nocat Milltek DPs, 3" catback s4 ko3 = 82.2dB (Chris_M)
S4 Milltek 200 cell DPs, Miltek dual catback = 83dB (Paz)
RS4 Milltek downpipes, 100 cell cats, resonated Milltek catback = 83.9dB (jeffw)
S4 full SKN exhaust = 84.5dB (rikrose)
S4 ko4s, nocat milltek downpipes, s4 dual catback, non resonated = 87.5dB (SATAN)
RS4 stock DPs no precats, miltek catback non resonated = 88.9dB (big andy w)
RS4 Hybrids, no cat milltek downpipes, miltek non resonated catback = 88.9dB (Doug)
RS4 no cat milltek downpipes, milltek resonated catback = 91dB (Ash)
RS4 no cat milltek downpipes, miltek resonated catback = 91.0dB (jarv)
S4, rs6 turbos, RS4 heads, no cats dual 2.75" turbo back 2 boxes = 92dB
RS4 no cats RS full exhaust(2 boxes) K16s = 94.4dB
ads4 95db at Castle Combe - Milltek 100cpsi with dual resonated link pipes.
RS4 full Milltek 100cpsi = 95db (Dace)
Porsche 996 turbo 650bhp titanium exhaust 96dB
Dougs Mota! 101.5 dB (but Castle Combe said 99 and 100 dB)
B5 S4 and RS4 noise tests
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