STI V5 Exhaust question....
01 November 2000, 01:50 PM
#1
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I have purchased a STI v5 with an HKS middle and back box fitted. I am thinking of replacing the downpipe with either the HKS or Scoobysport part.
I am aware of the 'no cat' position and so have the original middle section for mot time - but my questions are :
Will i see a furthur performance increase ???
Will I need ear defenders ???
Which product is better ??
From a newbie !!!!
Dog....
I am aware of the 'no cat' position and so have the original middle section for mot time - but my questions are :
Will i see a furthur performance increase ???
Will I need ear defenders ???
Which product is better ??
From a newbie !!!!
Dog....
01 November 2000, 03:03 PM
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I believe I am right in saying that the STi V5 mid section doesn't have a cat in it, just a lump which looks like a cat, so it won't be any good at mot time anyway. I have the Scoobysport downpipe and am more than happy with it (and SS centre and backbox) I personally don't think the sound is that loud inside the car (gorgeous outside though), although it is louder than standard. Your best bet is to find a friendly mot centre, or ask Pete at Scoobsport to borrow his special mid section to get you through an MOT.
01 November 2000, 03:29 PM
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Dog Basket,
I have an STI5 and am having a full Scoobysport exhaust fitted on Friday. Will post here after I've collected and driven it and let you know how it feels and sounds.
</img>
ChrisW.
I have an STI5 and am having a full Scoobysport exhaust fitted on Friday. Will post here after I've collected and driven it and let you know how it feels and sounds.
</img>ChrisW.
03 November 2000, 08:49 PM
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Dog,
I, like many others, have the Scoobysport downpipe on my sti 5 - been on for over a year now and I would thoroughly recommend it - make sure (if not already) that you also change standard air filter for something that will breathe a little easier.
The sound is wicked + some interesting turbo impeller noise and other mechanical niceties that weren't audible before - SS owners have been known to drive with their back windows down all the time ;-)
Caveats....
when fitting - make a decision whether you want to retain the turbo heat shield (will need some cutting/jiggery pokery to get it back on) or whether you will lag the pipe instead.
Allow 3 hours fitting time in your estimate of how much this will cost you.
as already stated, STI5 has only one cat - its in the downpipe so you will lose compliance with emissions regs.
watch out for excess boost after fitting -
may end up causing unwanted degree of knock....suggest you get aboost gauge and maybe have someone listen to the engine with det cans/hook it up to subaru select monitor.
If you post an e-mail address to pinkbadge@lineone.net I can send you some sound clips/dyno charts if you need help making up your mind
cheers,
Paul W
[This message has been edited by pwebb (edited 03 November 2000).]
I, like many others, have the Scoobysport downpipe on my sti 5 - been on for over a year now and I would thoroughly recommend it - make sure (if not already) that you also change standard air filter for something that will breathe a little easier.
The sound is wicked + some interesting turbo impeller noise and other mechanical niceties that weren't audible before - SS owners have been known to drive with their back windows down all the time ;-)
Caveats....
when fitting - make a decision whether you want to retain the turbo heat shield (will need some cutting/jiggery pokery to get it back on) or whether you will lag the pipe instead.
Allow 3 hours fitting time in your estimate of how much this will cost you.
as already stated, STI5 has only one cat - its in the downpipe so you will lose compliance with emissions regs.
watch out for excess boost after fitting -
may end up causing unwanted degree of knock....suggest you get aboost gauge and maybe have someone listen to the engine with det cans/hook it up to subaru select monitor.
If you post an e-mail address to pinkbadge@lineone.net I can send you some sound clips/dyno charts if you need help making up your mind
cheers,
Paul W
[This message has been edited by pwebb (edited 03 November 2000).]
04 November 2000, 05:32 PM
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I also have an STI v5 with SS back box,Magnex decat'd mid section and SS down pipe.
I did the mid section last and found that although it wasn't a cat the lump referred to previously was some sort of silencer.The midsection was most certainly the loudest of the three ammendment to my exhaust system.
You won't get much more noise from the down pipe only hear the turbo get cracking a lot earlier.
Definately the way forward.
...Ian
I did the mid section last and found that although it wasn't a cat the lump referred to previously was some sort of silencer.The midsection was most certainly the loudest of the three ammendment to my exhaust system.
You won't get much more noise from the down pipe only hear the turbo get cracking a lot earlier.
Definately the way forward.
...Ian
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04 November 2000, 10:18 PM
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Intelligent/Silly question. Delete as applicable
Dave T.S. eeeeaaassyy
.I noticed that Paul mentioned Knock and excess boost after fitting on the STI.
Does this affect UK models or only Imports? I'm saving for the full SS system and don't want to spend loads after.
Cheers,
P.
05 November 2000, 08:58 AM
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Dog,
AFAIK the SSPort d/p is rated much more highly than the HKS item - simply the HKS item has a plain flange and poor gasflowing on the welds/joins.
Ssport item has a big collector and better gas flow.
It's up to you - also if it is an STi V, you might want to think about a BPM twin dump. Around £350 plus VAT - but it does come with HPC which will help you reduce your exhaust and underbonnet temps - a GOOD THING (tm) (speaking of which, where is Pat?)
Sith,
AFAIK the potential knock/boosting problems are more likely to affect STis. However if you do significantly modify your car you will want to observe boost and det, and so investing in a boost guage and a knock link is also a GOOD THING (tm)
R
AFAIK the SSPort d/p is rated much more highly than the HKS item - simply the HKS item has a plain flange and poor gasflowing on the welds/joins.
Ssport item has a big collector and better gas flow.
It's up to you - also if it is an STi V, you might want to think about a BPM twin dump. Around £350 plus VAT - but it does come with HPC which will help you reduce your exhaust and underbonnet temps - a GOOD THING (tm) (speaking of which, where is Pat?)
Sith,
AFAIK the potential knock/boosting problems are more likely to affect STis. However if you do significantly modify your car you will want to observe boost and det, and so investing in a boost guage and a knock link is also a GOOD THING (tm)
R
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