Joined
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2,367 Posts
Hey guys, bought myself a new toy, had a play yesterday.
Over here in the UK, they test your car at 3/4 of your max rpm (5250). They test from 500mm/20" away at a 45 degree angle. Not sure for the rest of the world. Levels vary from track to track, with most at or around 102db, some at 105db, and some very strict at 99db.
When I went to Brands Hatch, the limit is 105db, the guy who tested me told me not to 'rattle the windows on the way out of the pits!' Which to me told me I was over but he let me through. When I went to Cadwell Park, I arrived late and didn't get tested, and also didn't get flagged during the day, so I was happy.
Anyway my findings are a little scary, bare in mind that an increase of 3db is TWICE as loud!
Cold idle 101.3db!!!
Warm idle 79.2db
Warm @ 5250rpm 108.3db!!!!!
Now remember thats at a static 5250rpm, not under load when screaming through the rev range! Well all I can think of is they must like the noise....
If anyone has any requests for testing, I'll try my best. If you live near enough, we can meet up and I'll test your car, or if you are going to the Dyno day at evolve in June, I'll be taking it there with me.
Over here in the UK, they test your car at 3/4 of your max rpm (5250). They test from 500mm/20" away at a 45 degree angle. Not sure for the rest of the world. Levels vary from track to track, with most at or around 102db, some at 105db, and some very strict at 99db.
When I went to Brands Hatch, the limit is 105db, the guy who tested me told me not to 'rattle the windows on the way out of the pits!' Which to me told me I was over but he let me through. When I went to Cadwell Park, I arrived late and didn't get tested, and also didn't get flagged during the day, so I was happy.
Anyway my findings are a little scary, bare in mind that an increase of 3db is TWICE as loud!
Cold idle 101.3db!!!
Warm idle 79.2db
Warm @ 5250rpm 108.3db!!!!!
Now remember thats at a static 5250rpm, not under load when screaming through the rev range! Well all I can think of is they must like the noise....
If anyone has any requests for testing, I'll try my best. If you live near enough, we can meet up and I'll test your car, or if you are going to the Dyno day at evolve in June, I'll be taking it there with me.