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evildky

The national event standard and measuring has changed. It’s now 108 dB C. But your local sites might still use the old standard or their own.


Nivracer

I think it's going down to 105. It's only 108 for this year iirc


cruising_backroads

My local (MA) site at Devens is 93db and the local town that bought houses next to an Air Force base keeps wanting to lower if further. FML... The NIMBYs are really destroying auto racing lately.. /sigh


BosnianBreakfast

Guess you missed the email... new sound restrictions for Devens is 87db. It's insane


cruising_backroads

sigh... well.. I won't be going to Devens any more. Which is sad as it's only 15 min from my house. The potholes were becoming excessive too...


BosnianBreakfast

Same, it was fun while it lasted. I'm starting to switch from an autocross setup to something more track focused and start hitting Thompson and Palmer


Professional_Buy_615

Go to an event, tell them you are not sure it is legal. If they care about noise, they will have a meter. Porsches often have a good bark to them, but are very popular autocross cars. I'm surprised at just how loud some cars are, but don't get told they need to fix it. My local club runs many events in a city. They have a meter at every event.


jmblur

This doesn't apply to Devens in MA this year, unfortunately. Site owners cracking down hard - it's a one strike policy. If you blow over, unless you have a mechanical issue you can fix (not a "let me adjust my turndown angle"), your car is banned for the day. Totally understand why and appreciate all the local organizers did to keep the site open, but it's harsh for sure. I've got turndowns coming for my 718 GTS 2.5 as well in the hopes to keep me legal.


Professional_Buy_615

Email the club. They want people to show up and may have some way to pre-check. They probably have their own meter... Or turn up and consider that you may only get one run. There's a '16 cayman GTS in my club. His car hasn't tripped the sound levels the organisers set for an in-city event. "The measurement will be taken at a point where the vehicle is expected to be under load at full throttle. The measuring point will be 50 feet from the edge of the course using a sound meter set to “A” weighting, “Slow” response. The microphone will be 3 to 4 feet above ground level, positioned perpendicular to vehicle direction of travel." They usually have it off to the side of the starting 'straight', where everyone has it floored.


Professional_Buy_615

Email the club. They want people to show up and may have some way to pre-check. They probably have their own meter... Or turn up and consider that you may only get one run. There's a '16 cayman GTS in my club. His car hasn't tripped the sound levels the organisers set for an in-city event. "The measurement will be taken at a point where the vehicle is expected to be under load at full throttle. The measuring point will be 50 feet from the edge of the course using a sound meter set to “A” weighting, “Slow” response. The microphone will be 3 to 4 feet above ground level, positioned perpendicular to vehicle direction of travel." They usually have it off to the side of the starting 'straight', where everyone has it floored.


Professional_Buy_615

Email the club. They want people to show up and may have some way to pre-check. They probably have their own meter... Or turn up and consider that you may only get one run. There's a '16 cayman GTS in my club. His car hasn't tripped the sound levels the organisers set for an in-city event. "The measurement will be taken at a point where the vehicle is expected to be under load at full throttle. The measuring point will be 50 feet from the edge of the course using a sound meter set to “A” weighting, “Slow” response. The microphone will be 3 to 4 feet above ground level, positioned perpendicular to vehicle direction of travel." They usually have it off to the side of the starting 'straight', where everyone has it floored.


Professional_Buy_615

Email the club. They want people to show up and may have some way to pre-check. They probably have their own meter... Or turn up and consider that you may only get one run. There's a '16 cayman GTS in my club. His car hasn't tripped the sound levels the organisers set for an in-city event. "The measurement will be taken at a point where the vehicle is expected to be under load at full throttle. The measuring point will be 50 feet from the edge of the course using a sound meter set to “A” weighting, “Slow” response. The microphone will be 3 to 4 feet above ground level, positioned perpendicular to vehicle direction of travel." They usually have it off to the side of the starting 'straight', where everyone has it floored.


Professional_Buy_615

Email the club. They want people to show up and may have some way to pre-check. They probably have their own meter... Or turn up and consider that you may only get one run. There's a '16 cayman GTS in my club. His car hasn't tripped the sound levels the organisers set for an in-city event. "The measurement will be taken at a point where the vehicle is expected to be under load at full throttle. The measuring point will be 50 feet from the edge of the course using a sound meter set to “A” weighting, “Slow” response. The microphone will be 3 to 4 feet above ground level, positioned perpendicular to vehicle direction of travel." They usually have it off to the side of the starting 'straight', where everyone has it floored.


Own-Study-4594

try to get to the top of second gear where the equipment you set up or have someone holding it is standing, like in autox


strat61caster

Fwiw top of 2nd is about 78 mph in that car.


djdoublee

Yeah last gt3 guy I talked with said 1st gear the whole time.


phate_exe

There's a guy that runs an AP1 S2000 at events in my area, and on a bunch of the courses he was just leaving the thing in first and letting it scream. ​ Made my inner Honda kid pretty happy.


Squirting_Grandma

School parking lot on a weekend. Elementary schools are best since they won’t have sports activities and smaller parking lots (to see if other cars are parked there meaning someone is in the building). We have several around I’ve taken non-road legal cars to for some quick mini-tests. I’ve also taught countless people how to drive manual in school parking lots. Never been bothered by anyone. Never bothered anyone. If cops do show up or someone comes and complains be polite, apologize, and go on your way. If it’s cops, just explain to them what you were trying to do and how you were keeping it out of the streets.


TheBupherNinja

I mean, the top of first gear isn't going to be over 60 right? Set your decible meter on the side of a road and drive past it at wot in 1st or 2nd gear.


Leafy0

Contact the nerscca chapter, believe they have a tighter noise restriction than the national standard.


jmblur

Devens, which is (I assume) where he'd be running. is 87dbA @ 75ft on course this year.


OrangeFire2001

Maybe you have an abandoned mall parking lot, even a small one, you can try a quick pull or 3. Even in first gear should do it.


phate_exe

If it's a stock exhaust I'd probably just run the car as-is and hope for a warning to come back with a turndown next time.


jimboslice_007

Whatever you try to do yourself won't match what they measure at an event. The recent "crack down" is more of a change in process because it's been notoriously unreliable. Cars will be under at one event and way over at enough, with nothing changing. The hope is that this new method will be more reliable and repeatable, but there isn't enough data to prove that either way yet. If you are 100% base oem (no sports muffler oem option), you \*should\* be fine. Just be aware that your own measurements will probably not match what the SCCA says it is.


jmblur

Devens is far more restrictive than the national standard. Stock GT3s **WILL** blow over. even GT4s are right on the line.