Home›Forums›Technical – General›Exhaust›Passenger Car Exhaust Limits & Test Procedure This topic contains 0 replies, has 1 voice, and was last updated by VRSenator065 5 years, 3 months ago. Viewing 1 post (of 1 total) Author Posts May 9, 2015 at 6:09 pm #6569 VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 696 Measuring car noise levels isn’t hard, but it depends a lot on year, number of cylinders etc, so you need to make sure exactly what limit applies to you and how its measured. here is a link to the standard, go to the download section and download the pdf. http://www.comlaw.gov.au/Details/F2006L01279/Html/Text#_Toc129579543 This is the exact test procedure http://www.ntc.gov.au/Media/Reports/%289745A524-E60D-9B7C-835B-CDAF7DC19D8B%29.pdf This is the page most of us are interested in And this as well So for example my car, a V8 manufactured in 1993, has to be under 91dB, measured at 3,300 rpm, measured 500mm from the tip at an angle of 45 degrees. This topic was modified 5 years, 3 months ago by VRSenator065. This topic was modified 5 years, 3 months ago by VRSenator065. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.