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YOUR RESEARCH996 PSE too loud for 98db Donnington?
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Suggestion · Original poster
Just booked PCGB Donnington 4th April but got letter saying 98db(A) drive by test will apply and that 'sports exhausts will probably fail'.
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Suggestion · Original poster
thanks guys - so I presume that they can't ban you from going on track just because you fail a static (which by the look of it I probably will) and will therefore use the driveby as the proper test.
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Suggestion · Original poster
thanks guys - so I presume that they can't ban you from going on track just because you fail a static (which by the look of it I probably will) and will therefore use the driveby as the proper test.
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Sorry if this is in the wrong forum guys but wondered if any 996 owners with sports exhaust fitted have had problems with noise levels. Just booked PCGB Donnington 4th April but got letter saying 98db(A) drive by test will apply and that 'sports exhausts will probably fail'. Apparently my version of the PSE does not have the quite switch.
Can I get any kind of silencers cheaply or should I re-book a noisier track? Or will it pass anyway ( can't imagine my 996 C4 being as loud as a 964 with sports exhaust for instance)
Any help appreciated
Migration info. Legacy thread was 122761
Hi, I have a 996C4S with PSE, but no switch.
I did Bedford on saturday and i think they are one of the strictest on noise, i believe 87db on drive by. I (like a lot of other pork) failed the static test which meant an instructor took my car and drove it at almost maximum revs right by a microphone on track. I passed, so i do not think you will have probs with a 98db drive by.
HTH
Migration info. Legacy thread was 122765
One of the key problems 911's suffer is having limited sound deadening at the rear where the engine is - so on static test, unlike a front engined car, where the mechanical noise is 10 feet away from the exhausts, the static tests ALSO pick up mechanical noise - and due to the frequency, it has a reasonably high SPL - on driveby, these frequencies don't travel well - so the drive by figure will always be much lower than the static on a 911.
HTH
Philip
Migration info. Legacy thread was 122778
thanks guys - so I presume that they can't ban you from going on track just because you fail a static (which by the look of it I probably will) and will therefore use the driveby as the proper test. If this is the case I will risk it and go on the day. I might ring Donnington to see what their take on it is.
Dan
Migration info. Legacy thread was 122786
Yes they can - and often do - but it's down to how you approach the marshalls - explain about the mechanical noise and then say "if I fail, can I do a drive by?" - then take it VERY steady by the sound meters :wink:
Philip
Migration info. Legacy thread was 122798
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