I think the sound restriction for Limerock is 86db. The problem is I have no way of measuring it. I'm running a 3" magnaflow exhaust and I was ok last time I went. I have since removed the cat and the car is considerably louder. I have been told by a very knowledgable driver that I will be ok, since he runs the same exhaust. I'm just curious if anyone has had any problems or can offer any advice?

 

This thread might help you out:

https://www.evolutionm.net/forums/ev...-free-app.html

86db at a race track seems low. Is that really the correct amount?


-Bink

 

i think lime rock is ~90db not 86. i have a invidia q300, downpipe and hfc and was fine. another guy there had a buschur catback and was fine as well. i think you should be fine. it is measured on the front straight from what i was told, so you can always let up if need be.

 

The ALMS cars are loud as hell!

 

When we go to Limerock we always thought the limit was 90.

But then again, there are certain days when you can do open(no limit)

 

Last time I was there they were right after west bend right before the bridge.

 

I picked this up on motorsportreg.com . It was a message for the audi club last year.


To: Steve Earley Date: 03/08/2011
From: Skip Barber, Georgia Blades and Scott Mayo

We are going to deal with this proactively:
• We are going to reduce the total noise
• We are going to have a sound engineer calculate the total reduction
• We are going to tell the town what we have done and we are going to stick with it

Even the biggest professional race, the American Le Mans Series, is down 2 dB
We are going away from a “one size fits all” dB limit; assigning every club a limit we think is reasonable in terms of cost, impact on performance, and effect on entries. We know “reasonable” doesn’t always mean “easy” or “cheap.” The new limit, effective immediately for your club N.E. Region Quattro Club is 86 db.

88 dB Porsche Club Day
105 dB Porsche Race Day
87 dB BMW Club
86 dB PDA non-race
86 dB SCDA
88 dB Lime Rock Drivers Club
105 dB Tuesday afternoon Test & Tune
If any member of your club has a car they believe, but aren’t certain, will meet the new limit, we will do our best to arrange a test at no charge. We will have some time in late March, in April, and some 5:00-6:00 p.m. time later on (by appointment only). Call Scott Mayo at 860-671-1403.
PLEASE don’t let anyone come for testing or a club day with an unchanged car that was too noisy last year. This isn’t about “beating the system” by short shifting or lifting off the throttle while being checked. This is about lending real meaning to the phrase, “We’re all in this together.”
Other contact numbers:
Georgia Blades - 860.671.1407
Skip Barber - 860.671.1409