ConnorW06

Just been reading up on how they're tested on track days etc and the readings are taken from a 45 degree angle, rather than standing dead central to the rear of the car. So I think tomorrow I'll get another set of readings and just see how they compare to today's, you'd imagine the readings I took today standing centrally to both exhausts would be higher, as the microphone is being hit equally by either exhaust. I understand sound travels, but logically you would think that the sound would be reduced when the microphone is not directly behind the exhaust. But we'll see! Worst case is that I'll have to look into bungs and see if I can find any good ones that don't require drilling, I've seen a couple that use clamps that simply tighten over the standard exhaust tips. I've been looking at Snetterton track days which have a 105dB static reading, so it may still be within reach with my current set up! Seen a couple of other tracks that are 95-97dB which I know I've got zero chance of getting on!

to the forum mate! Lovely looking car. Our paths may cross at some point! Usually in the Sudbury and Colchester areas though!

It's crazy really, Silverstone for example is set in its own complex which the closest place that the sound would intrude on must be 5-10 miles away? Mad to think even they have noise restrictions. Had a look at some dB reducers and bungs online, most of which state a possible (being the key word) reduction of 10dB, which the tracks I'm looking at are 105dB static, so I'm only over by 5dB if the reader I used today is anything to go by. Obviously for ease of use and cost I'd much rather go this route. Anyone use a bung or dB reducer on their Zed with any conclusive results?

Evening chaps, thanks for the replies, really appreciate your input. Like BobbyZ mentioned, chucking a standard or aftermarket back box onto my car isn't going to be possible due to the TDX2 being a true dual exhaust, which is why I'd much rather be able to drive there, have some fun on the track, and drive back without (ideally) having to swap half or all of my exhaust over. I understand that HFCs are an option, but reading online there isn't a huge difference, if any, between the noise level of HFCs and the ART pipes. Having never been to a track day it sounds like they're rather particular with regulations, especially noise. It's funny because of all the things you'd imagine could be an issue on the track, tyres that are in bad condition / bald, or the general 'safety' of your car being on a track with other drivers and needing to stop or go around corners fairly close to one another, you'd think noise would be the last thing they would worry about - do they check other parts of your car in these test areas? I know in some cases the locals like to have a moan because of 'noise pollution', but most of the tracks i'm looking at are in the middle of nowhere! Anyhow, don't get me started! I actually managed to get my hands on a Decibel meter today, not the most high-end piece of kit that's on the market, but states its accuracy is within 1.5dB, more than enough for some preliminary testing! Found some quiet, open land, fixed the meter on a tripod, positioned it centrally to my exhausts and placed it 0.5m back from the exhaust at around 1m up from the floor. I've just had a quick read-up online (while typing this) and the microphone is usually placed 0.5m away from the car at a 45 degree angle to the side of the vehicle, so my microphone being in the centre of the car may yield higher dB results? I presumed having 2 exhaust exits they would place the microphone centrally, can anyone confirm this? The results were as follows: Idle - 72dB 2000rpm - 95dB 4000rpm - 105dB 4750rpm (<- as close as I could get to it)- 110dB 6000rpm - 112dB 7000rpm - 114.5dB (shaun350z - That US forum you posted to link to was almost identical to my reading, despite being from 1m away instead of my 0.5 but they were using higher end equipment in a garage, interesting!) Revving like a yobbo in a Mcdonalds carpark - Peak 114.7dB Drive-by from approximately 8 metres away from the car @5000rpm - 85.4dB So taking the information from the Meter as an accurate-ish reading, it appears I would be over the static limit but within the drive-by limit. Ideally the next step would be to get the car measured somewhere that has the proper equipment and see what static results I get. I've had a look online Ekona for anywhere local to me that has the means to do testing similar or the same to that they would do at a track day, but everywhere is quite a drive from my house - typical! But for the mean time it gives us an indication of the noise levels coming from my exhaust. I would love to go to a track day sometime this year, but hate the idea of travelling down, paying for the track day just to be turned away at the door and sent on my way. It's a tricky one, sounds like you chaps have had different experiences with how strict they are and who they let carry on driving on the track! I know the safest option is to get another exhaust fitted if I were to go to the track, but after dropping a wod of cash on this exhaust just to change it over, seems like a huge shame and waste of money!

Evening all, I've tried looking online and can't seem to find any solid info on dB levels of the aftermarket exhaust systems for our Zeds. I was looking into track days recently and understand all tracks come with noise limits, and wondered if anyone had ever got a proper read out of the dB level at the required distance / RPM for their car that a track would test at? (Either on track or off). Most of the tracks I've been looking at have around a 105dB limit, and I have no idea whether the Motordyne TDX2 exhaust and ART pipes I'm running would exceed this? I know it's one of the louder systems for the Zeds, but has anyone else ever had their exhaust tested? And if so, what was the dB? Or, if you have been to a track with a rather loud exhaust, do they even check? Apologies for all the questions, I'm eager to here anyone's story if they've tracked their Zed before! Many thanks.

You're an absolute savage!

Agree with this 100% ^^^. How is it decided who gets the car parking spaces and who doesn't? And why should you lose yours after being with the company for such a long period of time? I'd be asking them questions and getting the answers before I agreed to give up my parking space and having to walk 40 mins each day! Obviously the physical exercise aspect is completely personal preference, but I'd sure as hell wouldn't want to walk 20 mins to my car after a hard day's graft :lol:

I've got the Bluetooth module in mine, and my old HTC One wouldn't pair, and nor does my Google Pixel either. It'll connect for the best part of 3 seconds and automatically disconnect. Had a look on the forum and it seems to be a common issue with some phones :-(

Ahh that's awesome! It's such an addictive car to drive and be in isn't it? they have so much character! I've had mine just over 2 years now, still makes me smile every time I turn the key, drive her or just see her parked up! I'd like to go for a meet but there isn't alot happening around our area!

Hey Connor! Not me but I'm in Halstead... you actually in Sudbury or just pass through? Sent from my iPhone using Tapatalk Good evening! Halstead isn't far from where I live actually! I live in the Sudbury area. Think Halstead is only about 10 miles from me! How long have you had your Zed?

Black Zed with tinted rear lights and a orange Nismo spoiler (think it's a Nismo spoiler!). Spotted you twice around Sudbury now, not sure if you're visiting the area or are a new local owner? Once a few days back around near Homebase and today while on my way to work. Fingers crossed you're on here! Would be great to have a local Zed owner!

Drove past a black 370z in Swindon on Swindon Road A3102 at around 4:45pm. Would love to be more specific, but I'm currently down here for work and have zero idea where anything is haha! Pretty sure the chap who was driving spotted me, wondered if you were on here?

Wheeey! Congratulations Tom! When did you pick her up? Enjoying the Zed experience already I bet!

to the forum mate! Nice looking Zed

Wheels and Spacers now sold, Mods please lock Thank you!

This is absolutely awesome! Seen these being sold online for crazy money and they definitely don't look as good as yours, you could be in business here mate!

*** Wheels Sold Pending Payment ***

UPDATE: *** Spacers now Sold *** GT4 Wheels still available. Many thanks!

Replied

UPDATE: *** SPACERS NOW SOLD *** UPDATE: *** WHEELS NOW SOLD *** Hi guys, Due to me recently buying some new wheels for the Zed, I’ve decided to put my GT4 Anniversary wheels up for sale with the 20mm/25mm Eibach spacers that transform how the GT4 and Rays wheels look, and make the Zed have that fitment it should have had from factory! I'll apologise now about the amount of photos I've taken! GT4 Anniversary wheels: *** SOLD *** Eibach 20/25mm Pro Spacers: *** SOLD *** Pics of the GT4 wheels and Eibach spacers fitted: Thanks for looking! Any questions please feel free to PM me!

Just out of curiosity what was the reasons your detailing mate gave it the thumbs down? As it's a new product and I've never used it before It'd be good to have a professionals opinion on it

Honestly I have little knowledge with the actual engineering (if you can call it that) and ingredients (pretty sure im using all the wrong words here ) that make these products act differently and make them better or worse for different applications, so definitely not a bad thing for you to be educating us guys

Just watched the video and I'm with you, the beading and sheeting properties look very similar, one definitely didn't stand head and shoulders above the other. When it comes to cost I usually don't look too into it as long as the product works well, but £6 for a product that produces them results is ridiculous really, what else is around that price bracket? Can't overlook that aspect at all. What kind of protection to you get from the BSD in terms of longevity? I'm more than willing to try anything as long as it's safe and works, I find myself not looking at the brand name or where it comes from as much as I used to. Seems the 'smaller' detailing companies are producing better products then the big hitters these days.

To be completely honest I struggle to get my head around what bracket most of the products on the market today fall under. They all seem to promise great protection and long lasting shine, whether they be a quick detailer, spray wax or spray sealant. I understand how the products are created and what goes into them differs from one to another.. All I know is that I've used alot of different spray products before and none have given this level of protection, yet to see how long it lasts though

Honestly, after trying loads of different sprays from all different companies all promising different things, I went into this one with a bit of a "here we go again" attitude, and it's genuinely the first spray detailer / wax that made me stand back and say wow! I've (attempted ) to put a video together showing the process of how quickly it is to apply, and what results you get in such a short time frame. The rear quarter panel already has some product on it from where I'd just done the boot, but keep an eye on the door handle section where you can see there's almost zero protection. I'd definitely recommend getting some and trying it for yourself, I'm very impressed!