I got an idea when I was measuring the effect of sound deadening on my car. Using your Android or iPhone you can measure the dB levels so can we have people with different exhaust and stock exhausts measure the loudness at different RPMs so people can have an idea of how loud each exhaust is? Of course parameters need to be controlled so..
- Top of phone under the shift knob at neutral
-
Car must be warmed up
-
Test must be done outdoors (driveway is fine)
- No sound deadening
-
Radio off, Fan/AC off
- Measure dB level @ idle (650rpm), 5000rpm, and 7000rpm.
- Other mods?
- What phone?
It should look something this for example (for me):
Exhaust: Tsudo Headerback Exhaust
Other Mods: Unichip tune, Injen intake
Phone: Samsung Galaxy S3
Idle: ##dB
@5000rpm: ##dB
@7000rpm: ##dB
I have sound deadening so my measurement wouldn't be accurate but I'll do it after work anyways.
Android app (free):
https://play.google.com/store/apps/d...51bGwsMSwyLDNd
This is mostly for interior cabin noise as that is what most people would care about.