DanDud Posted July 31, 2015 Posted July 31, 2015 the answer is to stick a socket up the exhaust (and use some method to stop it falling out)..... Quote
Stu Faulkner Posted August 1, 2015 Posted August 1, 2015 I believe they are supposed to give you an extra one db for atmospheric conditions and an extra one for meter inconsistency. Two db doesn't sound like a lot ( no pun ) but it makes a difference. I think anyone who has done a track day/race has had huge variations with the sound guy. Quote
Man On The Clapham Omnibus Posted August 1, 2015 Posted August 1, 2015 It is a logarithmic scale and 3dB is a doubling of sound level, and 10dB a tenfold increase as I understand it, so 2dB is quite a lot. Mine scrapes through at 99dB(A) most times with occasional figures as low as 97dB(A). It is a black art and very dependent on local conditions, operator foibles, and engine/silencer temperature. I have learned to always warm the car up beforehand, and to slowly bring the revs up so as not to overshoot. My Wunoff box has a loose component which resonates at about 3,750rpm so I try to get through that as quickly as I can. Quote
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