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Thread: help with db noise restriction, for track day

  
  1. #1
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    -matt's Avatar
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    help with db noise restriction, for track day

    basically im thinking of booking a track day at castle combe for in the summer, but there is a noise restriction of 100db, at 4500 rpm, at 1/2 meter from exhaust.

    my astra has a miltek cat back, and will have a de/pre-cat, and running regal stage 3 by then.

    any idea's wheather i will be fine, is there a way to find out, as i will loose £50 if i turn up and fail the test .

    anyone passed one of these tests, with a simular setup?

    just i have no idea what 100db sounds like

    cheers,
    matt
    astra sri turbo

  2. #2
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    lee gsi's Avatar
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    That will be fine.

    100db is loud.
    The truth is always the truth even if you haven't realised it yet...

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    rizo's Avatar
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    that should be fine, i don't even think my full milltek unresonated will be that loud. i have a noise tester here so may test it one day .
    Astra VXR - Arden Blue, Diamond cut 19's, Cruise Control, Debaged, Folding Mirrors, CD70 NAVI and CID + Aux-In, Factory Bluetooth, Piano Black Interior Trim, Full Milltek Unresonated Exhaust

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    I went to castle combe last year and my car passed no worries alot louder cars passed too.

    I have a miltek catback with the pre cat decat pipe 9l smic and thorney remap.
    SMIC, miltek catback, precat, Thorney remap 242.7 bhp 281lb/ft torque

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    Quote Originally Posted by rizo View Post
    that should be fine, i don't even think my full milltek unresonated will be that loud. i have a noise tester here so may test it one day .
    from Castle combe circuit
    All vehicles must comply to the strict noise limit of 100db(A), which is measured at ½ metre from the exhaust outlet at 4500rpm. All vehicles will be sound checked prior to taking to the circuit, please ensure that your car is in suitable condition for circuit driving and to MOT standard.
    SMIC, miltek catback, precat, Thorney remap 242.7 bhp 281lb/ft torque

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    im sure it wil be fine. 100db is very loud.
    Castle Combe Saloon Car Championship. Car 21, pug 106 GTI. Gone from track days to full on racing

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