blobbish Posted April 7, 2016 Share Posted April 7, 2016 The ZED is now supercharged and booked in for coilovers, sway bars and a Diff. I plan to do a few track days soon and although I have decats with a silencer the zorst is still quite loud. So does anyone have access to a noise meter so I can get an accurate reading. I know you can get phone apps but there just not accurate. Quote Link to comment Share on other sites More sharing options...
Ekona Posted April 7, 2016 Share Posted April 7, 2016 BookaTrack used to hire them for £10 inc p&p, give Jonny or Sarah a ring on 0843 208 4635 and I'm sure they'll be able to help. 1 Quote Link to comment Share on other sites More sharing options...
RobPhoboS Posted April 7, 2016 Share Posted April 7, 2016 You can buy a sound meter from ebay/amazon. It'll give you a fairly reasonable approximation. http://www.javelintrackdays.co.uk/trackday/index.php?option=com_content&view=article&id=5&Itemid=22 1 Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted April 7, 2016 Share Posted April 7, 2016 Will be only good for a guide, i have read different db's at different tracks with the same set up. Think you may struggle with decats. Quote Link to comment Share on other sites More sharing options...
Richf Posted April 7, 2016 Share Posted April 7, 2016 Will be only good for a guide, i have read different db's at different tracks with the same set up. Think you may struggle with decats. and a blower Quote Link to comment Share on other sites More sharing options...
brillomaster Posted April 7, 2016 Share Posted April 7, 2016 where as you based? most trackdays I know will be happy to test a car for you, just a case of popping along to your local track when there is a trackday on. Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted April 7, 2016 Share Posted April 7, 2016 I came in at 100 at Cadwell Supercharger Decats Invidia Quote Link to comment Share on other sites More sharing options...
Ekona Posted April 7, 2016 Share Posted April 7, 2016 Tbh if you're thinking of tracking your car you should aim to make it as quiet as possible. Put the cats and stock back box on for the day, trackdays aren't about the very last horsepower and we as enthusiasts should make sure we don't give the NIMBYs any more ammo. Quote Link to comment Share on other sites More sharing options...
Kev T Posted April 8, 2016 Share Posted April 8, 2016 Not sure if the standard cats will cope with the extra pressure from the blower, particularly on a high revving track day. Quote Link to comment Share on other sites More sharing options...
Jetpilot Posted April 8, 2016 Share Posted April 8, 2016 I have hfcs on a true dual on a Vortech V3, very quiet exhaust and passed at Thruxton the most stringent in the country, 90db static. As Ekona says, for the few extra hp the decats give you its just not worth the hassle and you probably wont even notice the hp lost. Quote Link to comment Share on other sites More sharing options...
d95gas Posted April 8, 2016 Share Posted April 8, 2016 Smartphone App available for both IOS and Android, does a decent job and to be honest was not that far off compared to one we borrow of H&SE 1 Quote Link to comment Share on other sites More sharing options...
blobbish Posted April 8, 2016 Author Share Posted April 8, 2016 I will try the android app initially and see what it says. I removed the HFC as they just get burnt out and fitted Decats with silences to reduce the noise. Abingdon airfield have quite a few track days so I may just pop over. Quote Link to comment Share on other sites More sharing options...
Jonny B Posted April 8, 2016 Share Posted April 8, 2016 I bought a noise meter from maplins a few years ago. It's been fairly accurate and reads pretty much the same as the ones MSA scrutineers use at any races we've been to. I don't remember it being too expensive. If you're anywhere near North Yorkshire, you're welcome to borrow it. Quote Link to comment Share on other sites More sharing options...
Richf Posted April 9, 2016 Share Posted April 9, 2016 I bought one of those £15 ones from Maplins today , on idle 1 m from the tailpipe my car was 110db Yep bit fruity Quote Link to comment Share on other sites More sharing options...
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