g60luke Posted January 25, 2010 Share Posted January 25, 2010 Hi, Anyone know what the dB levels of a standard exhaust are? I know that some of the aftermarket stuff is 90dB or more... Just wanted to know what a standard one is Cheers Luke Quote Link to comment Share on other sites More sharing options...
Husky Posted January 25, 2010 Share Posted January 25, 2010 UK or JDM? Quote Link to comment Share on other sites More sharing options...
matth76 Posted January 26, 2010 Share Posted January 26, 2010 I would assume low 80's dB but just a guess based on the fact that a Nismo is around high 80's and my Nismo is definitely a lot louder than stock when going over 2500 revs (but almost stock below this). Quote Link to comment Share on other sites More sharing options...
Ekona Posted January 26, 2010 Share Posted January 26, 2010 Stock UK backbox + aftermarket Y-pipe = 81dB at 4500rpm @ 0.5m from exhaust. As tested at Bedford on Saturday. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted January 27, 2010 Share Posted January 27, 2010 Figures are normally between 78-81 depending on the tester, equipment used and how its measured normally Quote Link to comment Share on other sites More sharing options...
marzman Posted January 27, 2010 Share Posted January 27, 2010 I think my JDM with a pop charger came in at 87... Quote Link to comment Share on other sites More sharing options...
docwra Posted January 27, 2010 Share Posted January 27, 2010 I got 78db @ 4K rpm at Castle Combe last year - Jap spec, decatted. I think it was the lowest he had tested all day Quote Link to comment Share on other sites More sharing options...
kazman Posted May 18, 2010 Share Posted May 18, 2010 Stock UK backbox + aftermarket Y-pipe = 81dB at 4500rpm @ 0.5m from exhaust. As tested at Bedford on Saturday. What does this combination sound like when compared to the standard y pipe? A lot of people say the scorpion back box without the japspeed y pipe is not much louder than standard, was wondering if I may as well save a few quid and get the same sound by changing the y pipe and not the back box.... Quote Link to comment Share on other sites More sharing options...
Neilp Posted May 19, 2010 Share Posted May 19, 2010 im running standard y-pipe with scorpion, with nismo intake... it sounds brilliant.. it is alot louder than stock and more growly Quote Link to comment Share on other sites More sharing options...
Ekona Posted May 19, 2010 Share Posted May 19, 2010 Stock UK backbox + aftermarket Y-pipe = 81dB at 4500rpm @ 0.5m from exhaust. As tested at Bedford on Saturday. What does this combination sound like when compared to the standard y pipe? A lot of people say the scorpion back box without the japspeed y pipe is not much louder than standard, was wondering if I may as well save a few quid and get the same sound by changing the y pipe and not the back box.... Honestly? It's not that loud really. Bear in mind that I've done that on purpose to ensure that I'll never have an issue with any trackday I choose to do, but it's also worth remembering that I used to have a K1 on there that I ran happily sans inserts so I do enjoy a loud exhaust! I forgot to mention I've also got a Popcharger on there too, and for me when the car is under load at WOT and I'm ripping through the gears to the 7K redline I'm more than happy with the noise the car makes: There's enough edge to put a tingle down your spine still. I do wish it was a bit more fruity at lower RPMs with less throttle, but I'm not prepared to risk losing trackdays by putting a different backbox on. For most people who are looking for a noise increase over anything else I would say that changing the Y-pipe alone probably isn't going to be enough for them, but then I haven't heard too many other Zed exhaust combinations in the flesh to have a proper comparison. Quote Link to comment Share on other sites More sharing options...
kazman Posted May 19, 2010 Share Posted May 19, 2010 Stock UK backbox + aftermarket Y-pipe = 81dB at 4500rpm @ 0.5m from exhaust. As tested at Bedford on Saturday. What does this combination sound like when compared to the standard y pipe? A lot of people say the scorpion back box without the japspeed y pipe is not much louder than standard, was wondering if I may as well save a few quid and get the same sound by changing the y pipe and not the back box.... Honestly? It's not that loud really. Bear in mind that I've done that on purpose to ensure that I'll never have an issue with any trackday I choose to do, but it's also worth remembering that I used to have a K1 on there that I ran happily sans inserts so I do enjoy a loud exhaust! I forgot to mention I've also got a Popcharger on there too, and for me when the car is under load at WOT and I'm ripping through the gears to the 7K redline I'm more than happy with the noise the car makes: There's enough edge to put a tingle down your spine still. I do wish it was a bit more fruity at lower RPMs with less throttle, but I'm not prepared to risk losing trackdays by putting a different backbox on. For most people who are looking for a noise increase over anything else I would say that changing the Y-pipe alone probably isn't going to be enough for them, but then I haven't heard too many other Zed exhaust combinations in the flesh to have a proper comparison. Thanks for such a detailed and honest reply Looks like i am going to have to fork out the extra cash for a back box then. Quote Link to comment Share on other sites More sharing options...
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