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Is the performance of your car significantly worse now than when it was new?

Yes, then you need to have the cause investigated and not just assume it is due to carbon build up.

No, then why be...

The RS5 is confirmed as a 450PS version of the NA 4.2 V8 - better breathing due to a redesigned inlet system is the main reason for the increase from 420 to 450PS.

1st - ALL CAPS is seen as SHOUTING!!!

I bought an RS4 because:
- I like Audi build quality
- I wanted permanent 4 wheel drive, for security in the wet and in winter
- I wanted a practical fast...

It's still not confirmed that there will be a B8 RS4, indeed hints from Audi top management suggest the next RS4 might be a B9 and be based on the B8 S4 S/C V6.

I wonder if, like most press cars, it just happens to have boost pressure "at the top end" of nominal i.e. it's running more boost (and making more bhp) than any car that you or I can buy?

I know the B7 S4 to B7 RS4 difference was greater (70bhp) but the character of the RS is SO different to the S - S = soft boulevard cruiser, RS = edgy performance vehicle.

If Audi have retained...

The B6/B7 V8 S4 was pretty similar IMHO, the last 1000rpm before the redline was pretty breathless too. I rarely hit the 6800rpm redline in my B6 S4 because it just didn't like getting there, on the...

Not that odd...

All forced induction engines have a bigger difference between real world and official figures than equivalent output NA engines.

Why? Because the official cycles have driving...

Most cars have their engine management calibration deliberately tuned to provide large MPG numbers on the EU cycles. Since those cycles don't reflect the real world it's just about impossible to get...

Checkout this calculator... http://www.tyresave.co.uk/tyresize.html

BigRick's latest attempt to intimidate a fellow member which I received by PM:



Because of BigRick's intimidation I've had to disable all forms of messaging from this site.

So BigRick can't...

Just to let you all know that despite him asking:



that BigRick has PMd me attempting to censor my replies to HIS question, because he's "too focussed" on getting new rotors.

If you don't...

It's not an excuse, it's a fact.

And nobody has managed to develop an alternative material that has the same key properties as asbestos (good heat resistance and soft). You think the brake...

It's all down to asbestos being banned.

Pads used to have a high asbestos content which was bad for pad life but good for rotor life since it was the pads that wore away when you braked and not...

I'd like to see him PROVE his words or eat them.

The downside of not running his RS4 at the same time is that it's not a like-for-like test - different driver, different track, different air temperature and pressure, etc.

Let's get rid of all the "should's"...

Auditude take BOTH your cars to a strip and get an independent third party to video some runs of the modded A4 and the RS4 with another independent third...

The C5 RS6 and B7 RS4 DRC systems are both 100% mechanical, with no electronics at all.

If you hear a clunk from the suspension when driving along a road where you normally don't hear a clunk...

He says he's in New England, so I think you're right about location.

I suggest you create an account on www.rs246.com and go to the B7 RS4 forum where you'll see the thread of fuel additives...

Surely this would be badged S5?

Me too - it's the first car I've ever owned that still makes me smile every time I drive it after 2½ years of ownership.

That's the difference between NA and turbo - a turbo engine with the same power and torque as an NA engine will feel more powerful because of the "kicK" as the turbo comes on boost.

For me changing gear myself is part of the "art" of driving.

Unless I drove most of the time in congested city traffic I wouldn't consider anything that changes gear for me.

+1 - standard RS4 suspension, not dropped.

Surely spacers would make rubbing worse since they push the tyre out further - to where the arches are lower?

Why would you want spacers? Just put on 275/30 19s and they fill out the arches anyway.