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Took my RS4 Saloon for the suspension to be setup last week (Bilstein PSS9 Kit & H&R ARB's) and as a result also got an accurate measurement of the mass. The result was 1714Kg with as near as possible a half a tank of fuel (ballast + actual fuel). I'm pretty happy with that, Audi claim 1650Kg but I ...

Sorry that's a typo it's for the RS6

*edit* well not a typo ... I was thinking one thing and typed another ... it is still technically "just an A6" with a bigger engine

Thanks for the info. As I said I don't want to run off on a tangent and discuss the DRC (it's been done to death) can we return to the original subject please. I have some info (it's an Audi service action for the A6) and it mentions using the dry break couplings to first disconnect the accumulators...

I am not really concerned with the recharging part I want to remove it so I can fit a Bilstein PSS9 B16 suspension kit.

Not looking to start a discussion about DRC Pros/Cons etc. just wondering if anyone has 1st hand experience of draining the DRC prior to removal? I was planning on just cracking open one of the unions and letting it weep out until the pressure is low enough to fully undo the joint and let it drain i...

1 Housemaster - Saloon – 41,500 - April 06 2 Plodwyn - 5,700 - Pontypridd - July 06 3 marktowl - Saloon - 43,000 - Plymouth - Feb 08 4 scoobyc - Avant - 25,000 – April 08 - checked by non Audi garage 5 SR71 - Saloon - 28000 - Cardiff - Oct 09 - Still dry 6 Jezzer - 8,700 - Hitchin - June 08 7 Sk...

There is an extra port in the centre valve by the looks of things, when both shocks are compressed (so a bump in a straight line) the valve is open and the fluid in the dampers can pass through both the normal ports in the shocks and the one in the centre valve. Then under roll when one shock is in ...

I suppose it depends on the ratio of the bore in the oil side and the gas side of the accumulator ... it could be one to one?

the system volume must change, if it were constant when one shock went into bump it's opposite corner would raise by the same amount.

that's what the accumulators are for, they use compressed gas to keep the system pressure up as the total volume changes due to displacement of the pistons in the shock absorbers. So you can work out how much oil you need to weep before the pressure will drop but you need to know the volume and the ...

Suspension is safety critical and it is checked yearly at the MOT in the UK , a leaky shock means your car is not fit for the road. Your analogy is slightly off, technology moves on yes, but if you went to ford for a spare for your Model T you wouldn't find ford had redesigned because of improving t...

anything circa 1% IS a significant failure rate, most high volume manufacturers will be aiming for a 6 sigma failure rate ... or that 99.9997% of units are perfect, especially on a safety critical system such as brakes or suspension. The fact that they are on the third generation design as well ...w...

booked in for a pressure test now, but not for another week or so as they were booked up. I am sure there is something amiss now, it feels like the rear tyre pressures are low but they certainly are not!

Is there a definitive check for DRC failure? When I bought my car in Feb I knew about the DRC failures and had them check the shocks before I bought it. They claimed that all 4 needed replacing (said by the salesman so could have been mistaken) I then had to wait for parts to come into stock before ...