boxsey911

It depends where you go. Your configuration will likely be OK for tracks with 105 db static test limits e.g. Oulton Park and Silverstone but you might have issues with tracks with lower limits e.g. Donington, Bedford, Castle Combe, Brands Hatch and Croft.

My own configuration is decat, standard primary and standard secondary and I don't have problems on any tracks.

Recently at Donington Grant's bespoke exhaust failed the 98 db driveby and so did Andrew's which has a G pipe. Surprisingly, Josh's turbo also failed but was able to get back on by turning the boost down and keeping the revs down.

bigunit_271078

in terms of the noise question. Pretty sure my car is just running the G Pipe and have had issues this year. I wasnt allowed on the the Nurburgring as failed there static at 101DB (supposedly needs to be 100 max) and at Donington was told that I registered 105DB's on track and wasnt going to be allowed back on unless I made some sort of exhaust mod (which obviously i didnt have on me). I was fortunate in that I was able to "persuade" the officials to let me back on sans a fix.

I am actually looking at silencers and found this which looks good. They are about £70. Seems an easier solution on the day if any problems come up. If anyone has found any other options let me know as wouldnt mind having one with me just in case.

http://www.decibeldevil.co.uk/

boxsey911

There is a specific 964 option which is a tailpipe with a baffle in it (pic below). You just have to swap it for your normal tailpipe. However it's about 250 quid so it would be well worth looking into that 70 quid option (which I've not seen before).

Cheeksyboy

[QUOTE=bigunit_271078;9716713]I was fortunate in that I was able to "persuade" the officials to let me back on sans a fix. QUOTE]



the marshall was about 5 foot 5, BU is ...well exactly what it says on the tin.....I didn't see, but can only imagine the scared marshall's face...

Porsche964FP

Yeah I've been looking at their stuff also - it's probably what I'll do... they're claiming 108db to 103db on a 964...

http://www.facebook.com/photo.php?fb...type=3&theater

Also Design Tek have an option but it doesn't look as secure... and tad expensive for what it is.
http://www.design911.co.uk/fu/prod55...64--DesignTek/
[quote=Cheeksyboy;9716743]

boxsey911

Good picture Frank....we can actually see how it fits now.

At that sort of price it would be well worth having one as a spare to take to the track and fit it as and when needed.

f@tboy

Thanks, Decibel Devil looks like the way to go for 'cheap' insurance!
Cheers

Cheeksyboy

good call on the Decibel Devil...I shall purchase one for my Oulton run with Steve and Co and get the marshalls there to post what db they read before and after fitting....and then I'll post the results here.....

Porsche964FP

Here are a couple more from their Facebook page... the construction looks rather robust. The exhaust wrap looks like a good idea.


Nice one. Look forward to the results!

PeterS911

I will be joining you on track as soon as my engine is rebuilt. It "should" be ready mis September. I am doing anglesey on 9 Sept but suspect I will have to use the 996.

I have a g-pipe currently and it doesn't sound as load as my standard (with PSE) 996.

I have friend with a decat that I would like to firt but dont want to fall foul of noise limits.

bigunit_271078

Boys I used my best Ivan Drago impersonation...."if you dont let me back on track....I WILL BREAK YOU!".............the end.........hahaha

Thanks for the test Grant. I am going to buy one anyway as i want to have one for the 16/8 just in case.

Porsche964FP

Errrrr group buy...

EDIT: Have no idea what my girth will be.

bigunit_271078

am keen for a group buy....need to measure up the exhaust as well.

Cheeksyboy

Group buy sounds a good idea....just measured my tail pipe and the OD is 3", so according to their site I need a DD3.0

Their distro "Advantage Motorsport" have an ebay site for my size ... they also sell a few of the other sizes!

http://www.ebay.co.uk/itm/Decibel-De...#ht_1132wt_952



It'd be interesting to know, BU, if you get yours for Brands and can also do a before and after test too, we can then do a comparison on how it works with different systems!

Porsche964FP