Hi all
I've just come back from the track day at castle combe. Bought my 991S a couple of months ago and had a few hours free so thought i would try and get a taster session. Turns out it failed the noise test at 110Db (105 limit). Test performed at 6000 revs. Irrespective of whether sport, sport plus or neither are selected there is a distinct change in noise level around 4000-5000 revs so seems the exhaust set up is the same once the engine hits this point. Guys there said they're sure other 991S cars have been on the track at castle combe so any ideas? Only thing i can think of is that i DO NOT have a sports exhaust. I beleive the sports exhaust works by bleeding sound back in to a chamber by the cabin so could it be that the sports exhaust cars emit less noise from the pipes by absorbing it in the cabin?
Just glad i hadn't paid for a day. Any ideas greatly appreciated!
I've just come back from the track day at castle combe. Bought my 991S a couple of months ago and had a few hours free so thought i would try and get a taster session. Turns out it failed the noise test at 110Db (105 limit). Test performed at 6000 revs. Irrespective of whether sport, sport plus or neither are selected there is a distinct change in noise level around 4000-5000 revs so seems the exhaust set up is the same once the engine hits this point. Guys there said they're sure other 991S cars have been on the track at castle combe so any ideas? Only thing i can think of is that i DO NOT have a sports exhaust. I beleive the sports exhaust works by bleeding sound back in to a chamber by the cabin so could it be that the sports exhaust cars emit less noise from the pipes by absorbing it in the cabin?
Just glad i hadn't paid for a day. Any ideas greatly appreciated!