I am looking to see if anyone has measured the level of any single exhaust systems. I am looking for the at idle, a parked rev to 6k, wide open throttle in cabin, and an in cabin 60-70mph. Anyone? I don't think anyone has but if I have an average DB level that I could have some data to work with. I am paticular looking for the Spugen Single TI.

 

amuse single r1:
idle : 74.9 db
cruising @ 3-4k rpm : 99.5 db
WOT: 114.8 db

 

Apexi N-1 To loud when on the gas. Idle is cool.

RAT

 

in general, what would u think the average, idle noise, cruising, and WOT db be?
maybe an average of the members here can answer.

 

T1R @ 4500RPM with test pipe:

silencer on: 82db

silencer off: 105db

 

I can take some measures from Dark_Sub_Rosa's Spugen single if you would like.

One thing to take into consideration is that the provided levels as measured are most likely ambient noise level A weighted dB SPL. If your concerned about your hearing then you need to take into consideration SPL levels at the eardrum which are distinctly different that these technically free-field measures.

 

What are the test conditions that all these sound measurements were made? Unless they're nearly identical the comparisons are not too helpful.

 

The police is the question. They have a microphone that measures the sound level when the vehicle is passing the officer. The distance is ? I forget. My Civic is at 105 including the noise floor. The sound of the car if over the ambient noise shoudl give a decent result as long as you are about 10ft from the object. Hearing and testing never come out the same. I am really just looking at peak levels. Thanks for the input so far. Anyone have the spugen single ti??