scoobyc

iTrader: (2)

Hi,

This is my millionth post about exhaust.

For those of you who are within the sound limits of track days. What exhaust are you running?

If possible description and brand. i.e. 3" turbo back decat with afterburner R back box.

Trying to gauge what i can get away with. would hate to spend 400 on a zaust to find its too noisey. that would waste 400 for the zaust and prolly 2-300 for the track day!

Thx
Chris

scooby-93

try a milltek exhaust. im not 100% sure what the db is but i have a milltek and its very quite compared to most 3" exhausts.

scoobyc

iTrader: (2)

i take it you pass track day tests then?

I want that lovely scooby sound, but within limits.

Anyone?

scoobyc

iTrader: (2)

The TSL Group N's Noisey? seen a magnex 3" down pipe all the way back to a TSL group N back box.

Rekon this will pass. perhaps i just need to commit and see what happens. Can buy a DB Meter for a few quids

Jolly Green Monster

iTrader: (4)

Headers have an influence on noise btw..

3bolt flange tubular headers
H&S 3inch downpipe
Revolution 3inch centre and backbox
has recorded from memory between 95db and 97db at Goodwood..
Was 97db at BrandsHatch.

Simon

Adam Jackson

the 3" magnex system is a lovely sounding exhaust. Quite but still has the proud noise of the flat four

scoobyc

iTrader: (2)

that sounds good. You rock jolly green monster.!

I would assume that no matter the downpipe/center section that wont affect the noise that much. more so the back box??

dunx

iTrader: (3)

TSL Group N was nice and quite on mine (full catted TSL system). Even good on the motorway !

HTH

dunx

P.S. Sadly gone to a 3" APS now.

Jolly Green Monster

iTrader: (4)

the whole exhaust effects the noise..

scoobyc

iTrader: (2)

ok.

I assume lots of people track here. What are the other options in use?

RAPID STI

iTrader: (4)

Standard header with a turbo back 3" to backbox. 99DB

rossi_p

iTrader: (26)

I'd go with the RCM 3" open neck downpipe and 3" Revolution exhaust.

This is the setup I'm intending (along with Teg Sport GT spec headers) and I believe this comes under most restrictions..

scoobyc

iTrader: (2)

Ok. But surely a 3" down pipe is a 3" down pipe..?

scoobyc

iTrader: (2)

Mind if i ask what brand?

RAPID STI

iTrader: (4)

Janspeed, had a Nur Spec prior to this and that was ******* loud.

scoobyc

iTrader: (2)

all good info.

Any reviews on the sports box or hks or greddy (is it) or prodrive or scoobysport?

172sport

iTrader: (6)

Scoobyclinic system 104db.

Peanuts

iTrader: (15)

clocked Hayward & Scott 3" downpipe
Gruppe S exhaust manifold and clocked up pipe
Revoluton cat(less) back

Never been turned away from Brands, Cadwell, goodwood, combe, ring, brunters etc

dynamix

iTrader: (3)

GT Spec headers, Milltek 3 inch decat system - measures 93DB at 5500.

TDO's love it on the static tests.

On boost is a different story.

Loud exhausts arent necessarily the most powerful

scoobyc

iTrader: (2)

hmm ok. so from the looks i can 3" decat without a problem.

But the choise of Back box is where the noise difference is really going to come from..?