JDM Exhausts - how to make them sound better
10 August 2017, 08:05 PM
#33
Perdoimpreza, UK cars have unequal length exhaust headers giving them the 'Subaru burble'. Import cars have a twin scroll turbo and equal length headers, meaning they don't sound at all like a UK car. UK sounds far better (to me) but people will tell you to buy a JDM car over UK as they are a better car
All JDM Bugeye and Blobeye WRX (I know I had one) cars came with unequal as did all the GC chassis in all worldwide markets. From Blobeye STi onwards the twinscroll was fitted to JDM Imprezas (and Spec B GT Legacies after 2003, I have one).
The UK cars retained the unequal length as it was cheaper and complied with EU emissions.
Last edited by The Trooper 1815; 10 August 2017 at 08:10 PM.
10 August 2017, 08:38 PM
#34
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I guess it depends how much one likes their neighbours. I used to have a full decat, deresonated, with a Vortex afterburner. It was loud, set off car alarms as I drove down a street, and apparently made buildings vibrate on cold start-up. I didn't really like my neighbours, though.
Judging from the video above, I can only assume Zany hates his with a passion!
10 August 2017, 09:14 PM
#35
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You are one considerate neighbour, dude! Fair play.
I guess it depends how much one likes their neighbours. I used to have a full decat, deresonated, with a Vortex afterburner. It was loud, set off car alarms as I drove down a street, and apparently made buildings vibrate on cold start-up. I didn't really like my neighbours, though.
Judging from the video above, I can only assume Zany hates his with a passion!
I guess it depends how much one likes their neighbours. I used to have a full decat, deresonated, with a Vortex afterburner. It was loud, set off car alarms as I drove down a street, and apparently made buildings vibrate on cold start-up. I didn't really like my neighbours, though.
Judging from the video above, I can only assume Zany hates his with a passion!
this ones quiet compared to the last even with the blitz on
they buzz off it as they hardly ever hear it for weeks at a time
10 August 2017, 09:16 PM
#36
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Thread Starter
Utter bollocks.
All JDM Bugeye and Blobeye WRX (I know I had one) cars came with unequal as did all the GC chassis in all worldwide markets. From Blobeye STi onwards the twinscroll was fitted to JDM Imprezas (and Spec B GT Legacies after 2003, I have one).
The UK cars retained the unequal length as it was cheaper and complied with EU emissions.
All JDM Bugeye and Blobeye WRX (I know I had one) cars came with unequal as did all the GC chassis in all worldwide markets. From Blobeye STi onwards the twinscroll was fitted to JDM Imprezas (and Spec B GT Legacies after 2003, I have one).
The UK cars retained the unequal length as it was cheaper and complied with EU emissions.
10 August 2017, 09:22 PM
#37
You are one considerate neighbour, dude! Fair play.
I guess it depends how much one likes their neighbours. I used to have a full decat, deresonated, with a Vortex afterburner. It was loud, set off car alarms as I drove down a street, and apparently made buildings vibrate on cold start-up. I didn't really like my neighbours, though.
Judging from the video above, I can only assume Zany hates his with a passion!
I guess it depends how much one likes their neighbours. I used to have a full decat, deresonated, with a Vortex afterburner. It was loud, set off car alarms as I drove down a street, and apparently made buildings vibrate on cold start-up. I didn't really like my neighbours, though.
Judging from the video above, I can only assume Zany hates his with a passion!
I can hear Zany set off and I live the other side of the Pennines!If I didn't do mad early and stupid night shifts,and if wasn't my daily I would be having one of the grpN copies from H&S....they sound proper nice!!!
10 August 2017, 10:24 PM
#40
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Back pressure is only a thing on NA cars, and its more to do with keeping up gas speed on exit as they rely on the scavenger effect to clear exhaust gas from the cylinders. Turbos dont need it.
10 August 2017, 10:24 PM
#41
Couldn't do without my burble Rich. Sounds good though.
Originally Posted by ossett2k2
Yes jay mine's a v3sti with an SC42 twin scroll conversion,does sound really nice on full throttle.
Fast spool and stays on boost well through the gears&never runs out of puff
Fast spool and stays on boost well through the gears&never runs out of puff
10 August 2017, 10:32 PM
#42
I think the twin scroll cars sound the best with raspy loud exhausts. So I think I'll need to replace my Cobra trackday friendly exhaust, it will probably sound too muted.
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
11 August 2017, 09:48 AM
#43
I've not read all the replies, but is not a case the OP has twin scroll, so his car sounds more like an Evo than the traditional Subaru burble? Changing the back box will change the note/pitch/volume but not the pulse from the engine, thus it will never burble?
11 August 2017, 10:00 AM
#44
I think this was a Scoobyworld on my old Blobeye..
My opinion is it was a liitle too loud, but nowhere near as loud as a blitz
I haven't edited the clip as you can clearly hear the car when it's over a mile away
At the time of recording for the purpose of "having a blast" as I was selling it, I think it sounded great, but if you were to commute it was too much.
My opinion is it was a liitle too loud, but nowhere near as loud as a blitz
I haven't edited the clip as you can clearly hear the car when it's over a mile away
At the time of recording for the purpose of "having a blast" as I was selling it, I think it sounded great, but if you were to commute it was too much.
Last edited by Rob Day; 11 August 2017 at 10:06 AM.
11 August 2017, 10:00 AM
#45
I suggest reading the replies then as that has been covered several time lol
12 August 2017, 05:20 PM
#47
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I think the twin scroll cars sound the best with raspy loud exhausts. So I think I'll need to replace my Cobra trackday friendly exhaust, it will probably sound too muted.
[url]https://www.youtube.com/watch?v=YP0RZPhexQ8
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
[url]https://www.youtube.com/watch?v=YP0RZPhexQ8
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
12 August 2017, 06:29 PM
#48
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I think the twin scroll cars sound the best with raspy loud exhausts. So I think I'll need to replace my Cobra trackday friendly exhaust, it will probably sound too muted.
https://www.youtube.com/watch?v=YP0RZPhexQ8
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
https://www.youtube.com/watch?v=YP0RZPhexQ8
Burble or not, they still sound way much better than the Evos and many other 4 cylinder cars.
13 August 2017, 10:27 AM
#49
I'm considering a Tomei expreme ti for my twinscroll, mainly for weight, but am concerned it will be wayyyy too raspy. I think someone on here got one a couple of years ago, and sold it on sharpish due to the volume. Other choice is a H and S. Current hks mid section and sti back box is quiet but drones a bit
13 August 2017, 07:33 PM
#50
I had a sti genome backbox with deresonated centre section with standard cat downpipe on my jdm sti and it was quiet around town but very loud at higher revs, recently taken it off and fitted a magnex backbox, slightly louder at lower revs and a deeper tone, but much quieter at high revs.
14 August 2017, 09:05 AM
#53
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the latter
14 August 2017, 01:31 PM
#57
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14 August 2017, 04:26 PM
#58
Scooby Regular
14 August 2017, 05:06 PM
#59
Scooby Regular
They are loud without decat!
https://youtu.be/mgUdWUassok
Wonder how my exhaust would sound with equal headers
https://youtu.be/mgUdWUassok
Wonder how my exhaust would sound with equal headers
Get ya Mrs to video it from the back end while you rev her up
we'll have a better comparison on the exhaust note that way