Originally Posted By CooperMan
Originally Posted By Peter J
Originally Posted By Gambalunga
It may have to do with the regulations as to where the sound is measured.


True, the UK Homologation test is "drive by", so side pipes might be louder.


Highly likely as the sound pressure wave is travelling directly towards the microphone


Perhaps the solution for the test is to simply turn the outlets so they point under the car.... then turn them back.... hide

Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...