Hatchback STi exhaust options/opinions
 

OK, so I've had an H&S full decat (2.5") fitted for a few weeks and TBH I'm finding it a bit loud (it's quite boomy inside the cabin), so I'd like some options and opinions of what else there is! I'm planning on keeping the decat downpipe, so it'll be cat-back that I'm looking at.

I have a Remus backbox, which was my original plan along with the centre pipe to match. Are these much louder than standard?

Cobra/Scorpion what are they like?

Or do I just dynamat the boot and be done with it :lol1:

The Remus backbox is about the same volume as standard (Hardly noticeable and then perks up a little when the foot goes down), they also sit quite far back as standard and are not to my taste so I could not wait to get rid of it.

I have the ProDrive backbox now which has a nice burble and looks great, though I'm going custom again in a weeks time as that is the only way I can get the look and sound I'm after.

Might be worth a look at miltek. They are apparently a bit quieter than the H&S. I've got a full decatted prodrive system (330S) at the moment and it's too quiet for me (plus a pain at MOT time). It's taken some time but I have managed to get hold of a second hand full turbo back miltek with sport cat for a bargain price. I'm currently polishing it up ready for fitting.

Cheers guys, might fit the Remus for now and look at other options to see if I can land a bargain! Looks are less important to me than the volume.

How much louder than standard is the Prodrive box? Does it just improve the rumble?

A little, though only when putting your foot down.

Yeah you only really hear when up the revs tho i suspect if you get rid of the centre section silencer itll open up the noise a bit better. Apparently tho they does sound well outside the car

I actually love the style of the remus ovals though they wont look right if you have the exhaust trims on the rear diffuser

My hatch came with a 3" japseed one ,, sounded nice till I went over 400bhp a blew all the baffles out lol so now I'm looking for a new backbox aswell

get one of these...

http://www.arkperformance.com/ARK-GR...1301-0210g.htm

Just dynamat the boot and save a fortune haha. I loved the noise of my Hayward & scott on my old hatch

TBF Rob, that's what the wife says. She reckons it's louder inside than out, which is my issue as it's my daily driver.

So I've checked with Revolution and they've confirmed that the REmus centre exhaust is slip joints not flanges, which is mad as that wouldn't mate to their own back box?!?!:wonder:

Anyway, if I was to go with the standard centre pipe is the resonator restrictive? There are some on eBay http://www.ebay.co.uk/itm/Subaru-Imp...item28055a696a and so I'm thinking the quick and dirty solution is to fit that with the Remus back box (and I guess book it in for a map check)

or.....

the scorpion section is flanged, and slip jointed :) the centre section comes in 2 pieces as seen here:-

http://www.scorpion-exhausts.com/pro...tml?autoid=356

i emailed them about it a few weeks back, and you can buy the centre section & link pipe for £200+vat

its resonated though so might just be the same as a standard centre section

Thanks for that Gambit :thumb:

H&S have offered a resonated centre pipe as an option so I think I'll go with that, hopefully it'l take the edge off the sound.

Old post but hav u got pics with this on ur car thinkin about buyin one. How did it look and sound its b a decat japspeed. Thanks mike

Yeah mines full decat aswell ,, very quite if I'm honest and now I removed the resonator from the Center section it sounds very tinny when on boost , if I'm completely honest I'm not happy with it and will be replacing it as soon as I can afford to but not sure with what yet


https://cimg2.ibsrv.net/gimg/www.sco...e4e3500f48.jpg

What do you guys think of the BLITZ NUr Spec ?

I just bought a hatch STi and looking for a 3 inch system and loud.

Any options out there ?

Thanks in advance

do they do one for the hatch?

Yes they do indeed.

http://www.blitz-uk.co.uk/ProductItem-2628.aspx

For that sort of money I'd personally go for a Perrin exhaust but that's due to all the other Perrin stuff I have on the car lol ,, 92db isn't very loud either really , I would of thought the blitz would of been louder

It is very pricey,fair play mate perrin is good,how does the exhaust sound on the perrin ? i was thinking of getting the blitz exhaust,but if its not loud i wont spend that sort of money.
What would be loud then 100db ?

I haven't herd the Perrin yet myself but can't be any worse sounding than the current one lol

You got standard one ?

3" full decat japspeed , but iv replaced it once and it still sounds naff

https://cimg6.ibsrv.net/gimg/www.sco...6482b0595.jpeg


invidia n1 marrying it up to miltek decat and link pipe jdm hatch

Nice hatch mate.

I have to say Invidia 300 they sound amazing.

Im going to go for either Invidia 300 or the Cobra its the only 2 that sound nice for the hatch.

Everything else is rubbish.

I have been doing a lot of research and videos.
The BLITZ NUR Spec is the one i wanted but its too quiet.

They have gone down from 96db to 92db thats very quiet.

this isnt on yet the miltek link pipe lamda hole in completly wrong place two foot out have blank and drill and tap for rear lambda hope have it running monday ir tuesday also hope it sounds nice i yhink it looks well love the hatches good luck with whatever you guys choose

Send me a video of when you have done it.

Whereabouts in Surrey are you? I'm North Hants so you could always pop over and hear mine, it's half the volume with the resonator but still loud. It's a 2.5" though but given the volume of mine before the resonator I'd imagine a 3" would not be popular with my neighbours...

**** the neighbours tbh
pal mine said is that gonna be my morning alarm i said better get used to it he said nomore

I have a prodrive backbox for sale if anyone is interested? 150 plus post,very good condition