Offical Audi S4 (B8) Thread

[bmer]

Originally Posted by Tarek

Which i weird IMO,quads always represent a more powerful stance/status not the twin ovals

Well, I agree with you Tarek but unfortunately there's not much we can do about it...

Originally Posted by Audi69

Stop comparing this car to the M3.

Huh? Who's comparing it to the M3?

[Tarek]

^ US carmags

[Tumbo]

Originally Posted by bmer

It's interesting that it has less power than B7 S4, S5 and E46 M3.

And yet it distances all of the above mentioned to 100 km/h, and the fuel consumption is much lower. That's what I call engineering!!

[Tarek]

^That new engine gotta be something with it's emissions and low fuel consumption,well done Audi

[Sayyaaf]

I have a technical question hopefully martin or one of the pro's answer ... does a supercharge engine suffer from a Lag as in a turbo engine ? As far as I am concerned the supercharge fitting is different from the turbo where it is directly powered from the engine main belt (which means instant spooling of the charger) .... I could be wrong but I hope some one answer ..

[Just_me]

It's hurtful to see that Tumbo didnt give me a thanks when I said the S4 looking better than C63

[Centurion]

I just did some digging and discovered that the 335i is just over €5 000 cheaper than the 3.2 Quattro. So I really wonder what Audi are aiming to do here.

[Tumbo]

Originally Posted by Just_me

It's hurtful to see that Tumbo didnt give me a thanks when I said the S4 looking better than C63

I missed that somewhere.

And..hold your breath. I find the C63 a better looking car than the S4.
But the normal A4 looks better than the C-Class.
Both are my two big favos in the segment though.

I wish the A4/S4 had the LEDs as the A5/S5 had!

[Just_me]

Originally Posted by Tumbo

I missed that somewhere.

!

LoL dont worry about it. I'm just messing with you

[Skorzenius]

freaking awesome. hope to be able to afford one someday.

[ACE]

Done some research and this site in the UK (Audi S4 set to make Paris debut, emissions reduction the big story - totallymotor.co.uk) says that the S4 will cost £36000. The 335i M Sport E90 costs £34980 by comparison. The S4 wins the value proposition hands down, imo. Now let's wait for actual tests of the S4.

[Just_me]

Audi S4 wont go for sale until March 2009. Much can happen until then. Not even Audi in Germany has released any prices.
Personally I don't think it will cost much more than previous S4.

[VroomVroom]

Can anyone answer why A S4 has been spotted in my town?? On english plates with no camo at all??

[Steve]

Well im sorry i dont like it. i THINK ITS A STEP BACK IN DESIGN FROM THE B7.

But each to their own

I do think the engine is interesting though, less immission + less power = more speed and better fuel economy.

[ACE]

Originally Posted by Just_me

Audi S4 wont go for sale until March 2009. Much can happen until then. Not even Audi in Germany has released any prices.
Personally I don't think it will cost much more than previous S4.

It seems that Audi UK have given indicative prices to the UK press. They are all quoting £36000 (about £1500 less than the B7 S4).
New Audi S4 | evo News | News | evo
Autocar - New 329bhp Audi S4

Prices and brochures will come out long before the first delivery is made in the UK (March 2009).

[Just_me]

Originally Posted by ACE

It seems that Audi UK have given indicative prices to the UK press. They are all quoting £36000 (about £1500 less than the B7 S4).
New Audi S4 | evo News | News | evo
Autocar - New 329bhp Audi S4

Prices and brochures will come out long before the first delivery is made in the UK (March 2009).

Then UK are fast if its true. Its going to be intresting to see how much S4 is going to cost in Sweden. Not every country has "nice price".

[DaSilva]

Originally Posted by Tumbo

One of the most booring car in history if you ask me, over priced will it soon be too.. I don't like it..not even a bit..
*Waiting for the RS version*


btw, nice rims the best part of the car and the engine of course!

[VroomVroom]

Originally Posted by DaSilva

One of the most booring car in history if you ask me, over priced will it soon be too.. I don't like it..not even a bit..
*Waiting for the RS version*


btw, nice rims the best part of the car and the engine of course!

You must have a very fun life to find this car boring

Btw I don't like the rims, they don't fit the arches and make the car look like it sits higher than it is

[dr Dunkel]

Originally Posted by DaSilva

One of the most booring car in history if you ask me, over priced will it soon be too.. I don't like it..not even a bit..
*Waiting for the RS version*


btw, nice rims the best part of the car and the engine of course!

Agreed. Give me this engine in the S5, which is a very nice and exciting car...

I can't help but thinking that the S4 will be priced just below the C63, IS-F and M3 in most markets.

[DaSilva]

Originally Posted by vroom_vroom

You must have a very fun life to find this car boring

Btw I don't like the rims, they don't fit the arches and make the car look like it sits higher than it is

Very funny indeed, I just hooked up with a crazy girl..
she's great fun!

Don't worry.. VrooomVroom..
Rims can be taken of and changed in 5 minutes.

Originally Posted by dr Dunkel

Agreed. Give me this engine in the S5, which is a very nice and exciting car...

I can't help but thinking that the S4 will be priced just below the C63, IS-F and M3 in most markets.

Thanks for your support.
Poor Audi

[VroomVroom]

Originally Posted by DaSilva

Very funny indeed, I just hooked up with a crazy girl..
she's great fun!

Rims can change in 5 minutes.
Don't worry.. VrooomVroom..



Thanks for your support.
Poor Audi

Haha! Have fun

And yeah I know The magic of photoshop

[DaSilva]

Originally Posted by vroom_vroom

Haha! Have fun

And yeah I know The magic of photoshop

Thanks mate.
but *** I wasn't talking about PS, I meant a real "IRL" tire change.
but yea I guess photoshop works too.

[Matt]

Looks pretty good! Problem is, and has always been with Audi, Audi will not price this thing anywhere near the 335i.

It seems as soon as Audi puts a red S badge on anything it becomes $10K more than what you would expect. This car will probably be $5k below the next M3 and $10k over the 335i. Perhaps it leaves a market open for a 335si to better compete.. BUt i guess well see.

Beautiful car though! typical audi, right?

[martinbo]

Originally Posted by Maserati

I have a technical question hopefully martin or one of the pro's answer ... does a supercharge engine suffer from a Lag as in a turbo engine ? As far as I am concerned the supercharge fitting is different from the turbo where it is directly powered from the engine main belt (which means instant spooling of the charger) .... I could be wrong but I hope some one answer ..

Nice question Mazzer... sorry to get back only now - yesterday was a public holiday down here.

In short, the quickest way to answer your question is to say this:
No. Supercharged engines do not suffer from lag in the way that a turbocharged engine does.

Unfortunately there are a few provisors to this statement. So we need to go into a bit more detail around engine charging. (Those of you who are bored with this stuff by now should stop reading here coz here goes: )

For instance, the concept of "lag" is the driver's perception of the time taken for an engine to respond after depressing the accelerator pedal. Before we go into a discussion around engine response, let me briefly cover the basics again.

In turbo'd engines this lag is prevalent because of the way a turbocharger works in conjunction with exhaust gas. A turbo only begins to work optimally when there is sufficient exhaust gas volumetric flow to turn the turbine fast enough for the compressor side to start generating the desired inlet compression or boost pressure. Along with this, a turbo's output is directly related to not only engine rpm but also throttle openings. With light throttle loads even at good rpm there is a period of lag where the turbo needs to spool up. The nice thing with a supercharger is that is being driven purely as a result of engine rpm - irrespective of the throttle position - so boost is readily available even at light throttle loads.

A supercharger is a compressor that is connected to the crankshaft via dedicated pulleys and a belt. So, even at idle the compressor within the supercharger is turning and producing some inlet pressure. However, some superchargers are designed to be, wait for it, more responsive at low rpm and others to be deliver more power at higher rpm. So, if you want your supercharger to deliver a bigger wallop then you need to deliver a greater volume of compressed air. To do this you need either a larger or faster spinning compressor (which can be achieved with gearing).

A supercharger's greatest drawback is that it consumes almost 1/5th of engine power as a result of being driven off the crank. So, theoretically, if you bolt a giant supercharger to your little 1.4 litre engine, the engine will labour to get that supercharger delivering enough power to overcome the mechanical drag of the supercharger itself. So whilst throttle response is instantaneous and the power delivery of the engine is linear, there most certainly is a perception more forceful acceleration at higher rpm. This is definitely perceptible in the old MINI Cooper S for example. A classic example of a quick responding supercharger is of that employed in the VW 1.4 TSI engine which makes use of a small supercharger driven off the crank and turbocharger driven by exhaust gas. At low rpm the supercharger immediately starts delivering compressed inlet air and the turbo sits idle. As the revs rise the turbo starts to spin and contributes to the inlet boost pressure. As efficiency in the turbo reaches the optimum, the less efficient supercharger is then decoupled from the crank via a clutch.

You'll notice that this new supercharged 3.0 TFSI engine delivers maximum torque at 2200 rpm - higher than that of the 335i (+- 1500 rpm iirc) - and this is directly as a result of the supercharger rpm having to reach a certain speed in order for the engine to produce the desired amount of torque. So, in effect, it is the 335i's turbo engine that is more responsive, hence the driver's perception of lag is significantly diminished.

So in such cases we can see that turbocharging technology has come a long way (small, twin-turbo'd configurations; twin-scroll turbos) in the interests of reducing lag almost entirely. But, as long as turbo's are spun by exhaust gases - there will always be some small measure of lag.

[PanterroR]

^