Exhaust farty popping noises ?

[DoubleD]

cerb4.5lee said:

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.

I like a decent exhaust and love to hear tgem. But driving round and round a car park is a very sad thing to do.

[RHVW]

Riley Blue said:

Tuvra said:

Clarkson is a 57 year old man, literally, an old man. He's not exactly the type of person Aud are trying to sell RS3's to?

57 is not 'old', not even close.

All is relative. To an 18 year he is almost dead.

[RHVW]

I like the sound - fake or not. I dont see it as any different to fitting a louder exhaust because you want your car louder.

[DoubleD]

RHVW said:

Riley Blue said:

Tuvra said:

Clarkson is a 57 year old man, literally, an old man. He's not exactly the type of person Aud are trying to sell RS3's to?

57 is not 'old', not even close.

All is relative. To an 18 year he is almost dead.

Ha ha thats very true

[ChilliWhizz]

I have only ever owned one 4 cylinder turbo car and that was an RS Sierra Cosworth circa 1990..... I honestly don't recall that it made pops and bangs (it was also chipped), but I do recall it was stonkingly good fun to drive, always put a grin on my face, and the absence of said pops and bangs in no way detracted from the experience. I'd go as far as to say I'd have probably felt a bit of a tosser if it had popped and banged its way down the high street or in a car park.....

I am an ancient old fart though......

[Riley Blue]

DoubleD said:

RHVW said:

Riley Blue said:

Tuvra said:

Clarkson is a 57 year old man, literally, an old man. He's not exactly the type of person Aud are trying to sell RS3's to?

57 is not 'old', not even close.

All is relative. To an 18 year he is almost dead.

Ha ha thats very true

Phooey!

RB (aged 67, eleven and three-quarter months)

[J4CKO]

DoubleD said:

cerb4.5lee said:

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.

I like a decent exhaust and love to hear tgem. But driving round and round a car park is a very sad thing to do.

Yeah, I like to hear them, when walking the dog at night for example you hear all manner of interesting stuff but never really in the right place at the right time to see them pass, the A34 Wilmslow bypass has some serious sounding stuff being wound out, including my manky old TT....

[cerb4.5lee]

DoubleD said:

cerb4.5lee said:

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.

I like a decent exhaust and love to hear tgem. But driving round and round a car park is a very sad thing to do.

Agree and I would certainly enjoy showing the R8's noise off when I got the chance, but circling a car park is going too far.

[Otispunkmeyer]

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

What is with the big numbers in blue at the high load end? Just a way to invoke a limit?

Reminds me of the days when I joined a company who decided to make their own dual-fuel ECU's and I had to learn how ECUs worked off of google. I had to write my own binary search and 1-D, 2-D lookup stuff (bi-linear interpolation) and then make up some wacky way of doing at all in reverse to get a new injection length.

we were measuring injection lengths from the ECU, which on a big diesel truck there are two signals per injector, equating that to a fuel mass, an energy, replacing some of that with gas, getting a new, smaller diesel mass and having to reverse the lookup to get the smaller injector lengths.

Now that I think about it I should have just made another map that had RPM vs fuel mass with injector times in the matrix.....

Edited by Otispunkmeyer on Monday 20th November 15:02

[16v stretch]

I kinda like it

But, mine's from a 3.0 Turbo, and it's more of a resonant pop/gurgle then the bwrapbwrapbrawp from the DSG Vag's.

My Corrado did it quite nicely until I fixed the ignition and overfuelling...

[cerb4.5lee]

J4CKO said:

Yeah, I like to hear them, when walking the dog at night for example you hear all manner of interesting stuff but never really in the right place at the right time to see them pass, the A34 Wilmslow bypass has some serious sounding stuff being wound out, including my manky old TT....

I always heard some quality stuff when I used to live around that neck of the woods, I once had a play with a tuned up Subaru in my Cerbera on that road, you'd always see Lamborghinis/Ferraris etc and it was a real treat.

I miss living around there for all the quality motors you see/hear, and I can't remember the last time I saw a decent car in Lincolnshire!

[kayzee]

Tuvra said:

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.

https://www.driving.co.uk/car-reviews/clarkson-rev...

Clarkson is a 57 year old man, literally, an old man. He's not exactly the type of person Aud are trying to sell RS3's to?

You mean to someone that's into cars, and is successful enough to actually buy one?

[AC43]

RHVW said:

I like the sound - fake or not. I dont see it as any different to fitting a louder exhaust dump valve because you want your car louder sound tttish.

FTFY.

Now I think about those Abarth 500's are bad offenders. Sound ridiculous (to my ears).

Edited by AC43 on Monday 20th November 15:16

[ChilliWhizz]

Riley Blue said:

Phooey!

RB (aged 67, eleven and three-quarter months)

That's amazing.... not all old people's home's will allow you internet access to this kind of site.....

[Tuvra]

kayzee said:

You mean to someone that's into cars, and is successful enough to actually buy one?

Do you seriously think Audi consider what 57 year old's think when developing the RS3?

I bet the age of the average owner is 20 years younger!

[foxbody-87]

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.

The traditional torque converter auto boxes never suffered from shift shock anyway unless they were faulty. Re-inventing the wheel springs to mind!

[rallycross]

Funnily enough I was going to start a thread titled "whats with the stupid Farty exhaust sounds?"

I keep hearing idiots in S3/RS3 deliberately making their fake farty noise all the time in built up areas.

These new modeled/fake exhaust notes do not even sound sporty. IE you wont hear anything like that on a race circuit/race prepared car, because its not a genuine performance sound.

And BMW now have ridiculous fake noises from their M cars, its embarrassing do people really think its a good sound?

[Chestrockwell]

It can’t be a DSG thing as all 35i/40i BMW variants make a similar noise when changing gear and they’re all 8 speed auto’s!

I actually love the noise M135i/M140i’s make when changing gear, it’s more of a deep kind of noise, some of you here will know what I’m on about. I wouldn’t say it’s farty like the VAG’s/A45’s.....or any 4 cylinder in that case.

As for the VAG 2.0 turbo stuff, they are quite embarrasing, especially when guys change up 4 gears to get to 30 in highstreets, I used to like the noise when I had first heard them on MK5 GTI’s and the scirocco equivalents but now they all sound the same, from Fabia VRS’s to S4 Audi’s!

[Big GT]

If the Pops and bangs sound like gunfire on the overrun then all is well. Wets farts programmed in under load not so good.


Good - https://www.youtube.com/watch?v=Aj_pcXRx8Pw&t=...

Bad - https://www.youtube.com/watch?v=-x8xcUQlWNk

[culpz]

J4CKO said:

So many modern quick cars do the farty pop noises on gearshifts, it seems to encourage dickish behaviour to get passers by to look, anyone else noticed this ? no problem with a bit of exhaust noise but this does seem to make some drivers want to trigger the noise for attention, does it only happen under load ?

How else would you be able to hear that 4-banger, otherwise? (excuse the pun)