Question about full exhaust and 98 dB sound limit

I went to Atlanta Motorsports Park last year for an HPDE and had a great time! At the time, I had a Borla S-type cutback, so I wasn't too concerned about the 98 dB sound limit. Since then, however, I added Kooks long tube catted headers, and now I have a feeling I'm over the limit... I haven't taken any measurements yet, but I got my sound meter from Amazon the other day so I can know for sure.

Does anyone on here have full exhaust and have any experience with noise limits? I'm thinking I may need to add the Borla resonator and swap out the X-pipe for it on track days. Not a big deal, but I'd like to get an "official" measurement and opinions before I do.

Are borla tips removable? If so get turn downs with supertrapps for track days it's what some of us do.

jdub.csu said:

Are borla tips removable? If so get turn downs with supertrapps for track days it's what some of us do.

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No, unfortunately they're not. AMP's website specifically says that sort of thing is not allowed, but I really have no idea if they enforce it or not.

Dragster,

I was in a similar situation. Was running Borla S-type and loved the sound. Then I added TX Speed & Performance LTHs and the sound was... lets say LOUD. At an SCCA National Tour AutoX event we were given a sound that we were approaching 100db (limit was 103 but they warn you at 100).

After the event I switched my Catback to the Magnaflow Streets and it was a CONSIDERABLE drop in db. At a similar event I was down in the mid 90s at full throttle so I am much happier.

NOTE: location conditions and weather have a HUGE impact on decibel readings. If you think you are close to the limit you should investigate a solution.

Anyway, that's what I have done for track days. Hope the info helps.