Post #1
Any cheap easy ways to do this guys?________________________________________
Just Drive It
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displaying posts 1 to 22 of 22
| Author | Subject: Measuring db of Exhaust? |
 rallyestyle
Seasoned Pro  Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
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 Posted 2nd Sep 2010 at 18:01
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braymond
Seasoned Pro  Location: Brighton Registered: 20 Aug 2008 Posts: 1,163 Status: Offline |
Post #2
Dont quote me on this - but i believe the iPhone has decibel meter on it.Just get them to replicate your standard trackside test - 2/3 revs etc ________________________________________ Rallye-RNurburgring article |
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Posted 2nd Sep 2010 at 18:15
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #3
I think it does but is it really that accurate  ________________________________________ Just Drive It |
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Posted 2nd Sep 2010 at 18:34
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #4
Should be okay for what you want Tom! Is this to get an idea before going on track or something??________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!!  |
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Posted 2nd Sep 2010 at 19:03
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chrisd306
Seasoned Pro  Location: Perth Scotland Registered: 26 Nov 2005 Posts: 10,061 Status: Offline |
Post #5
ipone is as acurate as you need as its same as cheap testers you can get on ebay.________________________________________ In my garage just now2003 BMW M3 & 2009 L200 Raging Bull & Audi Q5 S Line AX stock rod & Saxo Stock rod Sold the bike an charged rallye an bought a caravan, midlife crisis or what! |
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Posted 2nd Sep 2010 at 19:08
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oecken
Seasoned Pro  Location: Mt Cook, New Zealand Registered: 17 Feb 2009 Posts: 4,751 Status: Offline |
Post #6
 i was going to post, "theres an app for that" but was taking the p*ss  ________________________________________  Ex-Black 6  - Speed has never killed anyone, suddenly becoming stationary... That's what gets you. |
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Posted 2nd Sep 2010 at 19:18
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maz-306-xs
Senior User  Location: Folkestone Registered: 04 Feb 2008 Posts: 506 Status: Offline |
Post #7
The iPhone app is poo. My cars loud but at one meter facing the poo shoot it reads 103 which is max until you change the parameters to 105. Not a good app, if it was stronger it would probably measure my bike at 400 decibels!________________________________________ banned for drifting. back in the s**tbox scene. |
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Posted 2nd Sep 2010 at 19:51
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #8
jeffers wrote: Should be okay for what you want Tom! Is this to get an idea before going on track or something?? Yeah have booked a little outing at Woodbridge next month for a bit of fun (cant afford it but what the hell ) but am now wondering if my exhaust will be too loud I will get my sister to get the app on her iphone and see what it says. I have some guidlines on where to stand so lets just hope the phone is fairly accurate  ________________________________________ Just Drive It |
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Posted 2nd Sep 2010 at 19:55
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greenbelt
Seasoned Pro  Location: How's Life In London? Registered: 23 Apr 2006 Posts: 1,961 Status: Offline |
Post #9
 Trackday eh Tom? Might see if I can get to that one________________________________________ Standard Black 6Black HBSC6  |
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Posted 2nd Sep 2010 at 22:24
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cosmic spanner
Moral objector  Location: North London Registered: 11 Oct 2004 Posts: 10,399 Status: Offline |
Post #10
Maplins sell a proper db Meter for about 15 quid, actually the same model I saw them using at Cadwell Park the other day Bear in mind, though, these cars are quite as fook on a static test (mine was a church-mouse 80ish dB ) bit different once you're on the move and Mr Boost pops in to say hello  ________________________________________ Democracy is two wolves and a lamb voting on what to have for lunch....Liberty is a well-armed lamb contesting the vote. Project é - my 306 project thread. |
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Posted 2nd Sep 2010 at 22:49
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thugpuggin
Seasoned Pro  Location: Bristol Registered: 10 Apr 2004 Posts: 26,784 Status: Offline |
Post #11
I think the Nokia 6250 dB meter was fairly accurate if you happen to have an old one knocking around   ________________________________________ Black X Reg PIII.VGTi 6 A4212 pt 1 A4212 pt 2 Searching the streets of Bristol for 1.36p/day.Joint Kent Leader |
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Posted 3rd Sep 2010 at 01:42
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #12
Tom f its a static test you'll p*ss it don't worry! ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!! |
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Posted 3rd Sep 2010 at 07:58
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #13
greenbelt wrote: Trackday eh Tom? Might see if I can get to that oneIts £120 at the mo, im just going to get a feel of my car at higher speeds without worrying too much about hitting anything Gonna take a few friends too and make a driving day of it. There is a SC 911 currently on th list of attendees so looking forward to seeing that ________________________________________ Just Drive It |
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Posted 3rd Sep 2010 at 13:33
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #14
cosmic spanner wrote: Maplins sell a proper db Meter for about 15 quid, actually the same model I saw them using at Cadwell Park the other day Bear in mind, though, these cars are quite as fook on a static test (mine was a church-mouse 80ish dB ) bit different once you're on the move and Mr Boost pops in to say hello Cheers Mike, will have a gander in Maplins at lunch  ________________________________________ Just Drive It |
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Posted 3rd Sep 2010 at 13:34
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #15
jeffers wrote: Tom f its a static test you'll p*ss it don't worry! Hopefully My exhaust sounds like an earthquake around town though. When you open it up out on the road it sounds like a star exploding But so lovely  So i would be revving to 2/3 of max revs right, thats about 5200rpm, i will see tonight how loud that is to the ear Do they measure the noise at the revs below too or just the reading at that point?Cheers all  ________________________________________ Just Drive It |
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Posted 3rd Sep 2010 at 13:42
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armzsc6
Seasoned Pro  Location: Crowborough Registered: 22 Mar 2008 Posts: 3,445 Status: Offline |
Post #16
dont think i would stand a chance of passing at 5200rpm... my flatmate just started my 6 up on the drive and rolled it forward about 20 yards and even when it was nowhere near the house it was still just as loud in my bedroom at the back of the house... lolI think all my neighbors must hate me ________________________________________ Black power baby! SUUUUUPERCHARGED Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p 12x 306's owned so far Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist. Pug planet / Citroen Lexia diagnostics / code reads available. |
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Posted 3rd Sep 2010 at 15:55
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #17
armzs16 wrote: dont think i would stand a chance of passing at 5200rpm... my flatmate just started my 6 up on the drive and rolled it forward about 20 yards and even when it was nowhere near the house it was still just as loud in my bedroom at the back of the house... lol I think all my neighbors must hate me I feel your pain, they can hear me coming 5 minutes before im even home ________________________________________ Just Drive It |
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Posted 3rd Sep 2010 at 16:00
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manthos
Seasoned Pro  Location: Norwich Registered: 29 Apr 2009 Posts: 1,966 Status: Offline |
Post #18
just enough time for the misses to kick your best mate out your bed and out the back door.....lol________________________________________ Team SUPERCHARGED I LIVE FOR THE 306 Old Project thread Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url = |
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Posted 3rd Sep 2010 at 16:07
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rallyestyle
Seasoned Pro Location: London Registered: 23 Jul 2003 Posts: 14,991 Status: Offline |
Post #19
manthos wrote: just enough time for the misses to kick your best mate out your bed and out the back door.....lol Hmm good point, i had always wondered why he wasnt around when i was with his misses ________________________________________ Just Drive It |
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Posted 3rd Sep 2010 at 16:18
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manthos
Seasoned Pro Location: Norwich Registered: 29 Apr 2009 Posts: 1,966 Status: Offline |
Post #20
MWAHAHAHAHA.......karmap.s ive used the iphone app and was ok. ________________________________________ Team SUPERCHARGED I LIVE FOR THE 306 Old Project thread Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url = |
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Posted 3rd Sep 2010 at 16:32
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lotek
Seasoned Pro  Location: Berkshire Registered: 04 Dec 2007 Posts: 6,107 Status: Offline |
Post #21
you will pass fella i used to be worried about it , but mine always came in low figures , im running a pugsport magnex. you know your safe when a scooby with a 5 inch chav cannon infront of you passes a 100Db limit test |
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Posted 3rd Sep 2010 at 19:25
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lotek
Seasoned Pro Location: Berkshire Registered: 04 Dec 2007 Posts: 6,107 Status: Offline |
Post #22
Also when he asks you for you rev limit , hel tell you to rev to 3 ¼ of it or say to hold it at 5k revs.As he goes round to exhaust you rev up and only hold it at 4k |
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Posted 3rd Sep 2010 at 19:34
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