Exhaust farty popping noises ?
Discussion
I'm living near a busy road junction at the moment and hear the fake farty popping noise all day long.
Loads of VAG's doing it plus M4's.
Was dismayed to hear a new 911 doing it the other day and some of the latest Fezza's also seem to have a variation on the theme.
Not as bad as the knobs who put huge farty base cans on their automatic mopeds but on the same spectrum.
Loads of VAG's doing it plus M4's.
Was dismayed to hear a new 911 doing it the other day and some of the latest Fezza's also seem to have a variation on the theme.
Not as bad as the knobs who put huge farty base cans on their automatic mopeds but on the same spectrum.
Ari said:
I can't get that site to work, but if ever there was proof that you shouldn't blindly believe what is written on the Internet...
OK, I’ll blindly believe what you say instead, why not. To be honest though, I actually couldn’t care less what the technical reason is, manufacturers can’t really win when it comes to keeping cars compliant with emissions regulations etc and achieving some kind of drama and emotion, and as it the rule of PH, it’s VAG products getting the majority of the flack. No mention of the new M3/4 making the same sort of noises.
daemon said:
J4CKO said:
Dont get me wrong, I am not against noisy exhausts (had a 350Z with an aftermarket Stainless system on) , just feel that it is encouraging some to drive faster and more aggressively to trigger it in inappropriate situations, time and a place.
Oh come on, this is Pistonheads. If you want to sit around being po faced about what it might encourage people to do, can i suggest mumsnet or BRAKE?
http://www.brake.org.uk/
All we need now is a "think of the children" and we'll have the full set. We've already had someone mention PCP finance....
Edited by daemon on Monday 20th November 11:08
SonicShadow said:
Ari said:
andrewparker said:
Ari said:
andrewparker said:
“In a traditional manual transmission, when you shift gears, you lift off the throttle slightly to allow the revs to stabilise and drop slightly whilst engaging the next gear. An automated manual transmission requires the same sort of action, however since drivers don’t have to use the clutch and gear shift themselves, they often kept their right foot planted flat on the throttle – as you do in a car with an automatic transmission. This causes the revs to rise, and when the next gear engaged, there would be a massive jerking sensation as the gearbox was not in sync with the engine speed.
In order to circumvent this, Volkswagen came up with the concept of retarding ignition timing at the crucial moment of the gear change, effectively mimicking the act of lifting off the throttle. However fuelling and valve timing remain unaffected under this programming setup. This results in excess fuel being deposited into the combustion chamber, remaining un-ignited. When the next gear is engaged, ignition of the fuel is resumed via the spark plugs, and the excess fuel in the combustion chamber and exhaust manifold ignites creating that lovely “vroomph” fart/burp that we all know and love.”
So it’s there to ensure smoother gear changes.
I'm curious to know where you got that from because it isn't true. Probably written by some marketing Johnny who knows nothing about cars. In order to circumvent this, Volkswagen came up with the concept of retarding ignition timing at the crucial moment of the gear change, effectively mimicking the act of lifting off the throttle. However fuelling and valve timing remain unaffected under this programming setup. This results in excess fuel being deposited into the combustion chamber, remaining un-ignited. When the next gear is engaged, ignition of the fuel is resumed via the spark plugs, and the excess fuel in the combustion chamber and exhaust manifold ignites creating that lovely “vroomph” fart/burp that we all know and love.”
So it’s there to ensure smoother gear changes.
Most high performance auto VWs are DSG boxes so they're already in the next gear, they just engage one clutch as they're releasing the other. There is no clutch in, pause, clutch out.
And even conventional autos don't do it. In my car (which is a conventional auto) you can simply floor the throttle and keep it there and it shifts up as it touches the redline with no fuss or noise.
These pops and bangs (as has been said) are entirely artificial. I had a Mini Cooper S that did it, and that was a manual
t. Here's a Seat Ibiza Bocanegra accelerating hard with a VW DSG gearbox. It's from before the noise was cool - https://www.youtube.com/watch?v=0odtLg8omI8
No farty noises and fast smooth shifts.
mike74 said:
The first time I heard an rs3 I was a cross between massively underwhelmed at the monotonous engine note and amused at the hilarious fake dsg farts. It was basically...
drone,fart. drone,fart drooooone,fart.
It sounded quite ridiculous, I would have been truly embarrassed driving it
That was Clarkson's recent take on the 2018 RS3. Great car, ridiculous noises.drone,fart. drone,fart drooooone,fart.
It sounded quite ridiculous, I would have been truly embarrassed driving it
https://www.driving.co.uk/car-reviews/clarkson-rev...
Shnozz said:
It brightens my day more than a Tesla or thudding of a diesel engine, fake or not. A little GP Mini passed me by the other night with epic flatulence and made me chuckle rather than curse.
Minis do sound pretty good, I sold a 2002 Mini One for a friend recently and even that made some quite sporty noises, for 90 bhp anyway.Only on PH could a direct correlation be drawn between chavs and manufacturer ECU mapping.
For anyone playing PH bingo we have had chavs, and PCP deals - chuck in an adenoidal gramma Nazi and some simpleton mentioning a terrible PH Cliche (sausages, MX5 etc. etc.) and we will have a full house!
in all honestly, I don't care why my car does it, I sometimes switch it on and sometimes switch it off. It isn't really intrusive and isn't that loud in the grand scheme of things. It puts a bit of a grin on my face and what a few sensitive internet types think does not matter a jot to me.
I do like a loud exhaust:
My 350Z had a Nismo system with high flow cats - it popped and banged constantly when you came off the throttle.
My Cayman I lasted 3 days with the decat and Remus system I put on - it did sound like a carrera cup car, but it doing that at 7am when trying to park at work was a bit much.
My Z4 is exactly as it left the factory - loud enough when you want it to be with a good balance of turbo, induction and exhaust noises.
I'm not sure if the people having a moan are generally bothered by this, or it is just some sort of competition of who can display the most faux outrage.
For anyone playing PH bingo we have had chavs, and PCP deals - chuck in an adenoidal gramma Nazi and some simpleton mentioning a terrible PH Cliche (sausages, MX5 etc. etc.) and we will have a full house!
in all honestly, I don't care why my car does it, I sometimes switch it on and sometimes switch it off. It isn't really intrusive and isn't that loud in the grand scheme of things. It puts a bit of a grin on my face and what a few sensitive internet types think does not matter a jot to me.
I do like a loud exhaust:
My 350Z had a Nismo system with high flow cats - it popped and banged constantly when you came off the throttle.
My Cayman I lasted 3 days with the decat and Remus system I put on - it did sound like a carrera cup car, but it doing that at 7am when trying to park at work was a bit much.
My Z4 is exactly as it left the factory - loud enough when you want it to be with a good balance of turbo, induction and exhaust noises.
I'm not sure if the people having a moan are generally bothered by this, or it is just some sort of competition of who can display the most faux outrage.
daemon said:
Oh come on, this is Pistonheads.
If you want to sit around being po faced about what it might encourage people to do, can i suggest mumsnet or BRAKE?
http://www.brake.org.uk/
All we need now is a "think of the children" and we'll have the full set. We've already had someone mention PCP finance....
I was really hoping you'd say "pull the trigger on"....something. You already said "on tap", which is one of PH buzzword bingo phrases.If you want to sit around being po faced about what it might encourage people to do, can i suggest mumsnet or BRAKE?
http://www.brake.org.uk/
All we need now is a "think of the children" and we'll have the full set. We've already had someone mention PCP finance....
gavsdavs said:
daemon said:
Lord Marylebone said:
Last time I drove one of those Merc AMG A45's it did the whole 'gunfire during gearshifts' thing.
For the first 1 mile it was amusing, and then it was just annoying and to me, fake sounding, as though the pops and bangs were programmed in a sort of the fuel/ignition map?
It does it when you're pushing on. Under normal driving it generally wont. For the first 1 mile it was amusing, and then it was just annoying and to me, fake sounding, as though the pops and bangs were programmed in a sort of the fuel/ignition map?
I'm not singling you out, but the artificial overfuelling for dramatic effect in modern 'hot hatches' is just a little bit council IMHO. It's put there to keep the punter entertained.
I'll explain how cars do it, VAG have just tweeked onto it and made 4 cylinder turbos (that everyone moans about boring) sound exciting.
The part circled black is the pop and bang part, this is the ignition map. So between 3000-7000rpm at very light load (load is the top, goes to 320 where anything over 100 is on boost. 260 load for example is roughly 1.6bar boost) The ignition timing is -20 degrees in the circled area, so when you're off the throttle between those revs thats what the timing will be. The fuel map will be slightly richer in this same area too. This will give anti lag type pops and bangs, blows the baffles out the exhaust and actually damages the turbo. As an example WRC cars run -50 degrees and with a throttle kicker will generate around a bar of boost on idle
The part circled black is the pop and bang part, this is the ignition map. So between 3000-7000rpm at very light load (load is the top, goes to 320 where anything over 100 is on boost. 260 load for example is roughly 1.6bar boost) The ignition timing is -20 degrees in the circled area, so when you're off the throttle between those revs thats what the timing will be. The fuel map will be slightly richer in this same area too. This will give anti lag type pops and bangs, blows the baffles out the exhaust and actually damages the turbo. As an example WRC cars run -50 degrees and with a throttle kicker will generate around a bar of boost on idle
HedgeyGedgey said:
I'll explain how cars do it, VAG have just tweeked onto it and made 4 cylinder turbos (that everyone moans about boring) sound exciting.
The part circled black is the pop and bang part, this is the ignition map. So between 3000-7000rpm at very light load (load is the top, goes to 320 where anything over 100 is on boost. 260 load for example is roughly 1.6bar boost) The ignition timing is -20 degrees in the circled area, so when you're off the throttle between those revs thats what the timing will be. The fuel map will be slightly richer in this same area too. This will give anti lag type pops and bangs, blows the baffles out the exhaust and actually damages the turbo. As an example WRC cars run -50 degrees and with a throttle kicker will generate around a bar of boost on idle
Thanks for that, love the tech behind it, so I can correctly point out to the folk doing this in the retail park car park that they are actually quite retarded The part circled black is the pop and bang part, this is the ignition map. So between 3000-7000rpm at very light load (load is the top, goes to 320 where anything over 100 is on boost. 260 load for example is roughly 1.6bar boost) The ignition timing is -20 degrees in the circled area, so when you're off the throttle between those revs thats what the timing will be. The fuel map will be slightly richer in this same area too. This will give anti lag type pops and bangs, blows the baffles out the exhaust and actually damages the turbo. As an example WRC cars run -50 degrees and with a throttle kicker will generate around a bar of boost on idle
J4CKO said:
Apart from the farty exhausts, there was an R8 making a racket and a minor parking disagreement resulted some bellend in a sheddy mk1 Focus revving it to the limiter and setting off in a frenzy of squealing tyres and as much tyre smoke as it could manage and carried on accelerating.
I was at Meadowhall a few weeks back and a chap in his V10 R8 was driving around the car park hitting the throttle and backing off, and it was popping and banging like crazy, he just kept circling the car park doing it. My Mrs said what's that clown doing?...and I said if my car sounded as nice as his did I'd be doing the same!!
I do like show off exhausts though and I loved my TVR for the racket it made. Walking through the centre of Birmingham and noticed an absolute whopper in a baby blue M4 gunning it then coming off the throttle to generate the bangs on overrun - literally twenty yard blip before coming to a halt. Utterly nobbish behaviour and no reason to drive like that apart from to make the exhaust pop.
Yipper said:
mike74 said:
The first time I heard an rs3 I was a cross between massively underwhelmed at the monotonous engine note and amused at the hilarious fake dsg farts. It was basically...
drone,fart. drone,fart drooooone,fart.
It sounded quite ridiculous, I would have been truly embarrassed driving it
That was Clarkson's recent take on the 2018 RS3. Great car, ridiculous noises.drone,fart. drone,fart drooooone,fart.
It sounded quite ridiculous, I would have been truly embarrassed driving it
https://www.driving.co.uk/car-reviews/clarkson-rev...
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