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laguna seca db thread
Since a lot of us track our cars, and go to laguna seca I thought about making a thread about what exhaust will pass and won't pass for laguna seca.
My catless tomei El with catless resonated invidia front pipe, invidia overpipe and trd cbe did not pass at a 94.4 db. But putting my stock front pipe quieted it down to a 92.3 which still didn't technically pass, but the marshals didn't seem to care for the afternoon sessions |
Stock passes just fine, even with a Borla EL header.
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This has been brought up before, although not directly relating to what passes and what doesn't. Here's my answer from that thread.
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Greddy SP Elite will pass. Lol.
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If anyone wanted to know exactly how and where they measure sound at laguna this is a very good resource. http://scca.cdn.racersites.com/prod/...na%20v3%20.pdf
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Point your exhaust to the left of the car. It will also pass that way.
-alex |
I heard unconfirmed rumors that they have a 2nd mobile sound monitoring unit that can be placed in other parts of the track. Has anyone else heard of this? No mention of it in the presentation that was shared by @Chopstick though, and that seems to be a fairly recent presentation (from earlier this year).
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http://www.burnsstainless.com/images..._July_2011.jpg http://www.racingonthecheap.com/wp-c...st-300x225.jpg http://www.racingonthecheap.com/wp-c...st-300x200.jpg http://www.nsxfiles.com/images2/wurt...xhaust_car.jpg |
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Although they're measuring from 55 feet away. That means you can be about ~125 dB at 1 foot and you'd be right on the line of acceptability. |
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"I think it's just a rumor Kevin. The only sound station we've ever seen is the same one on driver's right at T5. Dave" |
that's good to know, i will stop spreading that rumor myself haha.
I wonder if anyone has ever wandered over to the sound monitoring station, offered an ice cold beverage (or a warm one if it's cold out) and a smile, and kindly asked if the sound guy or gal could look the other way every time a certain car went by... just long enough to miss the sound reading. ;) |
well last weekend there were cars with the laguna seca muffler, but none of them got meatballed, so no i dont think there's ever going to be a sound station on the left side. Hell i think i was the only 1 that did get meatballed lol.
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You can always just half-throttle or slow down on that corner. Works if you don't have an insane exhaust. The other day, some guys were bolting soda cans onto the end of their exhaust.
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well after i put my stock front pipe i didnt get meatballed. So didn't really bother me much.
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