Noise limits...help!

SM · Post by SM » Sat Jun 09, 2007 8:31 am

If your concerned, and you should be with a Nur-Spec exhaust, then look at getting a decat silencer, these make a lot of differeance to noise and basically no difference to power and back pressure (unlike bungs).

Ian (DaOne) · Post by **Ian (DaOne)** » Sat Jun 09, 2007 9:42 am

SM wrote:If your concerned, and you should be with a Nur-Spec exhaust, then look at getting a decat silencer, these make a lot of differeance to noise and basically no difference to power and back pressure (unlike bungs).

have you got any more info on these pics etc.

Safety_James · Post by **Safety_James** » Sat Jun 09, 2007 11:12 am

Yeah id be interested SM and no doubt Rob would be aswell... i know the Nurs are ridiculously loud but fun :P

duncan · Post by **duncan** » Sat Jun 09, 2007 11:35 am

I think he means just replace the back box with a quieter one

Naughty Magpie · Post by **Naughty Magpie** » Sat Jun 09, 2007 11:45 am

Is there anywhere I can get this noise testing done? I've not had a problem with turning up to tracks & driving but as I'm hoping to drive more mainstream tracks like Silverstone & Brands Hatch I wouldn't want to waste time & money if I'm too loud (which I guess I am).

duncan · Post by **duncan** » Sat Jun 09, 2007 11:47 am

We are going to try and sort out a session to do this (prob at one of the meets).....

Hugh Janus · Post by **Hugh Janus** » Sat Jun 09, 2007 2:20 pm

if anyone needs to borrow a NUR bung i have one

borgue · Post by **borgue** » Thu Jun 14, 2007 6:03 pm

just a warning about bungs,

whilst trying to restrain the din caused by my car using a bung i accidently
created a bung-zuka! i fired the critter across an A road and into a field.

luckily i missed everything, ok it did come loose a 7k rpm with foot down,
but there must have been one hell of a lot of back pressure to fire it out like that.

using a bung also increased my exhaust gas temperature by between 50 and 100 degrees F.

just a personal experiance, but i have learnt my lesson.

they also really hurt power output.

Ollie

duncan · Post by **duncan** » Thu Jun 14, 2007 6:05 pm

Personally i prefer a quieter exhaust to start with that works well. Noise isnt everything

Safety_James · Post by **Safety_James** » Thu Jun 14, 2007 6:05 pm

Another note re: the bungs...

me and rob both thought, oh no going to need them in with our Nur Spec's!...

luckily we didnt, his came in at 104db

and mine at 103db [-o<

so just on the brink of it!! :-D

Noise isnt everything, your right dunc, but it sure is nice!!