GMS - Alfa Romeo 4C - GMS 3" Modular exhaust system + GMS Stage I ECU + GMC carbon CAI - STATIC TEST

Static dB level test on Alfa Romeo 4C, equipped wtih GMS 3" Modular exhaust system (200 CPSI cat + GMS valved silencer) + GMS Stage I ECU (hard cut, pops and bangs, 7250rpm max) + GMC carbon CAI.
Measurements were taken with phone app so not absolutely trustworthy measurements, but should give a decent insight on sound levels differences between open and closed valve on the GMS silencer.
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GMS parts:
GMS Big brake kit 330/320
GMS SLT forged wheels 17x7.5 and 18x9.0
GMS Titanium SL wheel studs
GMS Performance rear arms - race
GMS Performance front arms
GMS Adjustable hollowed ARB
GMS Camber and caster plates
GMS Camber and caster shims
GMS 3'' Modular exhaust T304 (200 CPSI cat + valved rear silencer)
GMS Stage I ECU (hard cut, 7250 rpm max, pops and bangs)
GMS Stage I TCT
GMS Oil catch can system
GMS Carbon rear hood w/ GMS carbon race wing
GMS Carbon side scoop
GMS Carbon rear louver
GMS Carbon timing belt cover
GMS Engine mount - race
GMS Alu front bumper mesh
GMS Alu front hood mesh
GMS Alu rear bumper mesh
GMS FireX mount w/ floor mats
GMS Prototype projects (undisclosed)
Nitron NTR R3 coilovers
GMS services:
GMS Alignment specs
GMS Damping adjustment
GMS Corner balancing
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