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Full 3" cat back exhaust system for Sti hatch

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Old 06 March 2015, 04:14 PM
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Benji554
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Default Full 3" cat back exhaust system for Sti hatch

Ideally Milltek or Hayward & Scott. I don't want a silly loud one. Thanks
Old 12 March 2015, 08:16 PM
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....or revolution (Jetex)?
Old 22 March 2015, 10:57 PM
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Old 25 March 2015, 03:31 PM
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ryan51
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there is/was a cat-back on ebay for £250 i think.unsure of make.
Old 25 March 2015, 05:14 PM
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Hmm I've been keeping an eye on fleabay. There is a H&S but it's only 2.5" unfortunately.
Old 26 March 2015, 11:54 AM
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ryan51
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guess it depends on what you want to achieve,more noise or power?
Old 27 March 2015, 08:34 PM
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Take it you are bolting this to a de-catted 3" downpipe?
Old 01 April 2015, 11:12 PM
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I have a decat downpipe at the moment but I also have a Milltek sport cat that I want to use. I'm after power first and a bit more noise but not OTT.
Old 02 April 2015, 06:42 AM
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ryan51
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i have a full miltek on mine with sports cat,sounds quite nice,not too loud on tickover but nice when you give it some.makes fairly good power aswell.
Old 02 April 2015, 05:53 PM
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Originally Posted by ryan51
i have a full miltek on mine with sports cat,sounds quite nice,not too loud on tickover but nice when you give it some.makes fairly good power aswell.
Have you had yours on the rollers? What power did it make and what mods?
Old 02 April 2015, 07:55 PM
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ryan51
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i bought mine with modifications carried out by a previous owner.full miltek exhaust,forge cold air feed cosworth pistons etc.i had it on the dyno to check it out and it made 359bhp with fuelling issues(lack of fuel at the upper end).having it sorted an mapped again soon to correct issues.
Old 02 April 2015, 08:08 PM
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Shouldn't be injectors at that level. I don't know what mine is running. I bought it with a fresh forged build and an Owens billet 20g but I think the exhaust and standard filter are holding it back. Got a CAIK ready, just need an exhaust another remap.
Old 02 April 2015, 08:14 PM
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ryan51
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no i dont think its injectors.more likely a dirty sensor/plug etc.i work away a lot so its hard to get things sorted quick.its worth putting your car on the dyno to see what its doing.for the sake of £60 ish and the answers you will get.wgat kind of power would you expect with your midifications?
Old 02 April 2015, 10:51 PM
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Hard to say. The turbo is good for 400 with the right supporting mods. I'd be happy near that, not looking to go over.
Old 02 April 2015, 11:08 PM
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I know its only 2.5" but did you see this?
http://www.ebay.co.uk/itm/Subaru-Imp...item2c994364c0

Looks to have a small centre box and no rear so should be free flowing I guess! I thought about it for my car but I reckon it'll be too loud

Edit: oops just noticed you said not too loud, my bad! I think this is the one Ryan is referring to as the guy originally listed it at 400 and has been steadily reducing it at each relisting.

Last edited by fatboy_coach; 02 April 2015 at 11:11 PM.
Old 03 April 2015, 12:25 PM
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Ah yes I did see that. Thanks. I think that will be too loud plus only 2.5" and I'm not a fan of power flow to be honest.
Old 13 April 2015, 09:27 PM
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Old 13 April 2015, 09:44 PM
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stuart148
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iv got a milltek 3" cat back
but the center tappers to 2.5 at the down pipe
very good condition and coming off the car tomorrow
Old 14 April 2015, 08:13 PM
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Thanks, PM sent
Old 14 April 2015, 08:52 PM
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sorry mate didn't see the hatch in the title
Old 15 April 2015, 11:27 PM
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No worries.....


Still looking...
Old 03 May 2015, 09:42 PM
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Up...
Old 04 May 2015, 07:32 AM
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domino46
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Possibly swapping out my japspeed full 3" system soon if it's any good to you ? Won't be asking a lot for it so I'll let you know when it's off the car
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