jord79
Well-Known Member
- Joined
- Jul 26, 2015
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- 69
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- 969
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- Location
- West Yorkshire
- Vehicle(s)
- 2016 Mustang GT
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- #1
Hi Guys,
Thought I'd try here to see if anyone might be able to shed some light on something I have been pondering on exhaust tones.
I'd really like my s550 to have that old style exhaust note that you get on old muscle cars. I know there is a big variety of sounds, but what is most noticeable to me that is different on older cars is that on start up and at low revs you get a kind of hollow/echoey sounding tone that seems to come from deep within the exhaust system. With most modern systems all the sound feels like it's produced at the tail pipe.
Listening to (a lot of) youtube videos, I've found that you can hear this tone on mustangs up until the mid 2000s (4th gen?) Admittedly, this is most notable on the ones that have off road headers/H-pipes but interestingly, you don't seem to get the same results by removing the cats from the current model.
I understand that another difference might be that the Coyote V8 has a different firing order to older motors, but essentially it is still L-R-R-L-L-R-L-R, or vice versa so shouldn't be too different there.
Another difference I've noticed is that on the 4th gen, and earlier models, the mufflers are more in-board, i.e. before the rear axle, making for a much longer tail pipe. A couple of guys on the UK forum have been able to reduce 'rasp' on their Roush axle backs by adjusting the tail pipe trims outward.
I have fitted an MBRP street system which seems to have gone some way towards achieving a more authentic muscle car tone and I guess largely down to the H-Pipe, but it still sounds very 'angry' which seems to be a feature of the modern cars rather than the more 'laid back' aggression you get from older cars. The 'H' section of the pipe is very short with the two pipes running close together, and again I wondered if this might play a part in it. If you think of a trombone, a lower note is achieved by moving the slider out, essentially lengthening the amount of travel of the air, so maybe the same would apply to exhaust design?
Does anyone else have any theories on this or, better still, found any solutions? I'm willing to try adding some lengths of pipe to the tails to see what effect this has, but it might be a while before I get round to it.
Thought I'd try here to see if anyone might be able to shed some light on something I have been pondering on exhaust tones.
I'd really like my s550 to have that old style exhaust note that you get on old muscle cars. I know there is a big variety of sounds, but what is most noticeable to me that is different on older cars is that on start up and at low revs you get a kind of hollow/echoey sounding tone that seems to come from deep within the exhaust system. With most modern systems all the sound feels like it's produced at the tail pipe.
Listening to (a lot of) youtube videos, I've found that you can hear this tone on mustangs up until the mid 2000s (4th gen?) Admittedly, this is most notable on the ones that have off road headers/H-pipes but interestingly, you don't seem to get the same results by removing the cats from the current model.
I understand that another difference might be that the Coyote V8 has a different firing order to older motors, but essentially it is still L-R-R-L-L-R-L-R, or vice versa so shouldn't be too different there.
Another difference I've noticed is that on the 4th gen, and earlier models, the mufflers are more in-board, i.e. before the rear axle, making for a much longer tail pipe. A couple of guys on the UK forum have been able to reduce 'rasp' on their Roush axle backs by adjusting the tail pipe trims outward.
I have fitted an MBRP street system which seems to have gone some way towards achieving a more authentic muscle car tone and I guess largely down to the H-Pipe, but it still sounds very 'angry' which seems to be a feature of the modern cars rather than the more 'laid back' aggression you get from older cars. The 'H' section of the pipe is very short with the two pipes running close together, and again I wondered if this might play a part in it. If you think of a trombone, a lower note is achieved by moving the slider out, essentially lengthening the amount of travel of the air, so maybe the same would apply to exhaust design?
Does anyone else have any theories on this or, better still, found any solutions? I'm willing to try adding some lengths of pipe to the tails to see what effect this has, but it might be a while before I get round to it.
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