Cupra 300 exhaust sound
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Golf R Estate exhaust
The Golf R Estate uses a different exhaust to the three and five door Golf R. It's actually the same one as the Cupra ST. Only the outer tip on a Golf R Estate's exhaust is actually an exhaust, it matches up with the line of the Cupra's single exhaust tip. The inner tip is just for show. The exhaust on the 290 SC/5 door is just an adaption of this exhaust. It'd cost more to give the SC/5 door the equivalent Golf R exhaust, whilst the ST & R Estate only have a cosmetic difference at the exhaust tip. So I'd guess it's doubtful there will be an exhaust borrowed or developed?
The Golf R Estate uses a different exhaust to the three and five door Golf R. It's actually the same one as the Cupra ST. Only the outer tip on a Golf R Estate's exhaust is actually an exhaust, it matches up with the line of the Cupra's single exhaust tip. The inner tip is just for show. The exhaust on the 290 SC/5 door is just an adaption of this exhaust. It'd cost more to give the SC/5 door the equivalent Golf R exhaust, whilst the ST & R Estate only have a cosmetic difference at the exhaust tip. So I'd guess it's doubtful there will be an exhaust borrowed or developed?
What is the actual difference between the sc/5 door exhaust and the ST's?
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Exhaust differences
The differences are as follows exhaust wise:
280SC/5 door have a three silencer setup (the exhaust gas passes through there silencers before leaving the exhaust).
The 280 ST has a two silencer setup, with a marginally diameter wider pipe.
The 290 ST has precisely the same exhaust as the 280 ST.
The 290SC/5door have the same exhaust as the ST, only modified to be marginally shorter. Other than that, no differences.
The wider diameter two silencer setup exhaust is more free flowing, enabling higher boost at lower revs. The map in the cars with he 2 silencer system is identical to the map in the Golf R. This is why there is a nicer torque curve for the 280 ST & the 290 (although claimed as something new for the 290, it was the reason the heavier ST could do the ring nominally faster than the SC, without removing air-con etc.). The peak boost pressure is the same for all 280s & 290s, yielding in approximately the same peak power.
People keep saying the map didn't change. It did. I have quoted a source for this before on here somewhere.
The differences are as follows exhaust wise:
280SC/5 door have a three silencer setup (the exhaust gas passes through there silencers before leaving the exhaust).
The 280 ST has a two silencer setup, with a marginally diameter wider pipe.
The 290 ST has precisely the same exhaust as the 280 ST.
The 290SC/5door have the same exhaust as the ST, only modified to be marginally shorter. Other than that, no differences.
The wider diameter two silencer setup exhaust is more free flowing, enabling higher boost at lower revs. The map in the cars with he 2 silencer system is identical to the map in the Golf R. This is why there is a nicer torque curve for the 280 ST & the 290 (although claimed as something new for the 290, it was the reason the heavier ST could do the ring nominally faster than the SC, without removing air-con etc.). The peak boost pressure is the same for all 280s & 290s, yielding in approximately the same peak power.
People keep saying the map didn't change. It did. I have quoted a source for this before on here somewhere.
As follows:
George from Burgertuning, the guy principally behind the JB1 & JB4 for the Golf R/Audi S3/Leon Cupra, said the following.
'Our test car runs the 280hp version of the EA888 Gen 3 so the unit is compatible and you will be able to add a bit more boost due to torque restriction in the Cupra version which has .1bar less boost in the mid range.'
http://www.golfmk7.com/forums/showth...t=10775&page=2
for some reason the link isn't working. I'll go find it again, must have changed something.
Here it is
http://www.golfmk7.com/forums/printthread.php?t=10775&pp=17&page=2
George from Burgertuning, the guy principally behind the JB1 & JB4 for the Golf R/Audi S3/Leon Cupra, said the following.
'Our test car runs the 280hp version of the EA888 Gen 3 so the unit is compatible and you will be able to add a bit more boost due to torque restriction in the Cupra version which has .1bar less boost in the mid range.'
http://www.golfmk7.com/forums/showth...t=10775&page=2
for some reason the link isn't working. I'll go find it again, must have changed something.
Here it is
http://www.golfmk7.com/forums/printthread.php?t=10775&pp=17&page=2
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So the ST and the SC/5 door 290 should have the same exhaust with the only difference being the length of the piping?
I am a bit surprised by that as the ST is a bit too silent for me. When having my ST serviced at Seat they were preparing a new SC for delivery and it seemed to me that it had a deeper more tromping sound. Same goes to all the YouTube videos of SC/5 door test and the associated dsg farts/burbling at 4K rpm, which seems more noticeable than on the ST...the sounds are definitely there on the ST but seems more subdued.
I am simply asking as I would - if possible - make the changes to the ST exhaust to match the sound of the SC/5 door...
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The SC/5 door exhaust is not the same as the ST even for the 290's.
The 280 SC/5 door has 3 boxes (1 resonator and 2 mufflers?) running in series. The final silencer had 2 exits so that you have the 2 tail pipes like this:
The 290 SC/5 door only has 2 boxes as has the middle muffler removed. The final muffler looks exactly the same as above on the 280 (although internals maybe different I don't know)
The ST's (280 and 290) however have 1 resonator, then the exhaust splits in 2 (to go either side of the spare wheel well) and there is a completely separate muffler for each exhaust tip:
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The 280 SC/5 door has 3 boxes (1 resonator and 2 mufflers?) running in series. The final silencer had 2 exits so that you have the 2 tail pipes like this:
The 290 SC/5 door only has 2 boxes as has the middle muffler removed. The final muffler looks exactly the same as above on the 280 (although internals maybe different I don't know)
The ST's (280 and 290) however have 1 resonator, then the exhaust splits in 2 (to go either side of the spare wheel well) and there is a completely separate muffler for each exhaust tip:
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The SC/5 door exhaust is not the same as the ST even for the 290's.
The 280 SC/5 door has 3 boxes (1 resonator and 2 mufflers?) running in series. The final silencer had 2 exits so that you have the 2 tail pipes like this:
The 290 SC/5 door only has 2 boxes as has the middle muffler removed. The final muffler looks exactly the same as above on the 280 (although internals maybe different I don't know)
The ST's (280 and 290) however have 1 resonator, then the exhaust splits in 2 (to go either side of the spare wheel well) and there is a completely separate muffler for each exhaust tip:
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Maybe I am just slow...but to mirror the setup of the SC/5 door (with the only difference being one big muffler vs two small in the ST) one would need to remove the resonator?
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No all the models have the resonator.
The 280 Sc/5 door has 1 resonator, then a central muffler, then a 2nd muffler as per the first picture (3 boxes in total all running in series)
If you want a 290 SC/ 5 door exhaust on a 280 Sc/5 door you effectively just remove the central muffler in between the resonator and the larger rear muffler (so have 2 boxes running in series)
If you have an ST and are trying to make it the same as the SC/ 5 door setup you'd need a custom made exhaust as it just has the resonator and then the 2 separate mufflers (running in parallel so to speak) but 3 boxes in total.
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Sorry for the terrible drawing just couldn't be bothered finding the oem diagrams...
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Sorry for the terrible drawing just couldn't be bothered finding the oem diagrams...
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Thank you for that!
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So basically the 280 SC & 5 door gasses pass through three silencers before exiting the vehicle. where as the gasses pass for both ST pass through one silencer, separate and then through one more silencer before exiting the vehicle, so they pass through two in total. The 290SC & 5 door the gasses pass through two silencers, diverge and out two pipes. Whatever way it's looked at the 280SC & 5 door gasses have three restrictions to overcome, the 280 ST & all of the 290s the gasses have to pass through two restrictions before leaving the vehicle. The difference being all at once then diverging or diverging poor to the final restriction. I guess the accounts for the sound. The rolling road shows the torque curve difference between the 290 SC & 5 door and the rest of them.
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Thanks for this.
So is the louder SC placebo?
Maybe the SC is louder because you sit CLOSER TO END OF THE EXHAUST where the SOUND basically comes out from?
How is the sound difference OUTSIDE the cars? I am happy with the volume inside the ST as it's a family hauler and not a track car 99.9% of the time.
So is the louder SC placebo?
Maybe the SC is louder because you sit CLOSER TO END OF THE EXHAUST where the SOUND basically comes out from?
How is the sound difference OUTSIDE the cars? I am happy with the volume inside the ST as it's a family hauler and not a track car 99.9% of the time.
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Thanks for this.
So is the louder SC placebo?
Maybe the SC is louder because you sit CLOSER TO END OF THE EXHAUST where the SOUND basically comes out from?
How is the sound difference OUTSIDE the cars? I am happy with the volume inside the ST as it's a family hauler and not a track car 99.9% of the time.
If you are talking exhaust and not sound attenuated then the SC and 5 doors are louder than the ST. The 290 SC and 5 door are louder than the 280 SC and 5 door.
If you feel the SC is louder than the 5 door of the same version either it's placebo or maybe due to the shape of the car it lends to allowing more sound through, however I thought the wheelbase was the same for all 3 cars, ST, SC and 5 door, it's just the larger overhang at the rear on the ST that pushes the exhaust noise further back.
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