dizzy619

Hi guys, I have recently purchased a 2004 Wrx ppp uprated turbo, injectors full decat and remap...... 300bhp.
My problem is this.... The Exhaust is just too loud.... 90db on start up!!
I have tried a bung for longish journeys that drops it 10 Db's but iI want it quieter.... Just a nice burble not this full on war cry.....
What I am thinking is changing the back box for a sti prodrive one.. Will this work or will it be too restrictive and ruin the map?
I am also getting rid of the dump valve too....... 2 weeks is enough of that...
Thanks in advance.
Darren

RA Dunk

Revolutions exhausts (or eggzausts if your under 20) are rumoured to be quite quiet, have a look on there website and see if there are any decibel figures.

Good stuff by getting rid of the chav horn as well, I'm not 100% sure but you might need a wee map tweek if you change the exhaust and chav horn as the will both be incorporated into your current map.

LDNSTi

Make sure you get the map tweeked with your new exhaust

grey_boy

Sound proof the car..sod the people outside

thestumper

iTrader: (1)

Milltek exhausts are quiet in comparison to many aftermarket exhausts and if you are just changing the back box you don't need a map tweak.

andylinney

Darren, I too am looking at alternative exhaust systems. I have a full 3" Milltek system with a sports cat and no resonator and im getting 90db in the car at 70mph when cruising and more when on-boost.

I'm waiting on a bung arriving from eBay to see if that makes it a bit more manageable on drives where I know I'm not going to be pushing the car but I'd prefer something that is more burble and less howl. That said, I certainly turn heads and then giggle as people look confused when they see a Forester.

p1junkie

iTrader: (5)

full 3 inch milltek with 2 resonators is nice on mine
prev had the blitz ear bleeder nur spec 2 loud syst

reedy107

Would it fail the mot as it stands ??

What r the regs for one ?? Or up to the tester ??

Quinvy

Yes you need a resonated section mate, or a sports cat.

Sami_D

iTrader: (1)

I have a full sti prodrive system up for sale now if you fancy a trip to Essex!

LuckyWelshchap

Here's a thread containing useful info/advice:

https://www.scoobynet.com/scoobynet-...got-a-nip.html

matt12

iTrader: (2)

I had the same problem with a straight through 3", went for a cobra track friendly system, from downpipe, can't find fault at all, we'll priced, much quieter and nice tone

grey_boy

Milltek on mine sounds quiet when driving miss daisy... then RAAAAAaaaAA when needed..

antonio99er

I have a prodrive system on mine dont no how far up the car it goes but ide swap you if you wanted to?

_Viktor

you dont mention what exhaust you have (or did I miss that)
or how many miles its done..

My HnS 2.5 rear was too loud for me so,
I found a workshop that can weld stainless steel and supply a bit of steel to cover the hole that I cut into the top of the rear so I could take out what (little) was left of the old wadding and replace it with
http://www.thermalvelocity.co.uk/Sil...BAC/p-117-425/

When cutting it open dont cut to the very front and rear ends, leave an inch so some meat to weld the new plate onto.

I think I got 500mm x 1000mm and it just all went in..
now much more of a burble than the tin can farting noise it was before.

Vik.

swaynie

iTrader: (6)

Get a resonator fitted