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Has anyone had their RS4 BHP tested and discovered that the power is well down on expectations?

If so how was it resolved?

Dont go there!

Sorry, why what happened? I am in the same boat!!

http://rs246.com/index.php?name=PNphpBB ... highlight=

Hope this helps.

There are many (lengthy) threads on here about this. If you read any of it you really need to read all of it, there are differing viewpoints on whether there is a power output problem with a few cars, most cars, all cars etc etc. Some think that it's simply a case of rolling roads not being able to deal with the RS4's transmission, and that the results are misleading, or there not being sufficient air for the car to produce full power standing still. Others maintain that the cars lose power because of the oil residue build up in the inlet ports, due to the car's oil vapour recovery system not being up to the job. One or two with particularly poor RR figures have tackled Audi with the problem. You really need to do a lot of reading on here if you are seriously concerned about your car, if you aren't, then frankly you might want to give it a miss - and as Terry says "Don't go there!"

smoke and mirrors...

simple test without involving a rolling road.

do some timed runs, using proper equipment..

if your car is running the right times or thereabouts then there is nothing wrong with it...

if it isnt, then go down the path with audi.

honest,

Beware of existing owners (of which I am one) seeking to protect their interests....

if your car is running the right times or thereabouts then there is nothing wrong with it...

I personally disagree with this analysis.

Its like telling someone with a lump in their chest there is nothing wrong with them only to subsequently discover they've got cancer.

Unfortunately, as already suggested, you need to arrive at your own conclusions by reading the material on the forum.

jonathonturner wrote:if your car is running the right times or thereabouts then there is nothing wrong with it...

I second this analysis - it takes out of the equation all the debate (and boy has there been some on here!) about rolling roads and conversion factors.

SR71 wrote:honest,

Beware of existing owners (of which I am one) seeking to protect their interests....

if your car is running the right times or thereabouts then there is nothing wrong with it...

I personally disagree with this analysis.

Its like telling someone with a lump in their chest there is nothing wrong with them only to subsequently discover they've got cancer.

Unfortunately, as already suggested, you need to arrive at your own conclusions by reading the material on the forum.

you cant continually talk this down mate.

if a 414 bhp car is timed by the manufacturer and indepandant journalists /organisations and they all punch in at around a certain point, and then you do the same tests and your findings are there or thereabouts, how can your car be down on power?

rolling roads are not real world, where as road tests are. they provide conclusive proof that there either is, or isnt a problem with your individual car.

this should be the starting point, and the effective benchmark with which to make a informed decision?

there is no conspiracy.

jonathonturner wrote:if a 414 bhp car is timed by the manufacturer and independant journalists and organisations and they are all punch in at around a certain point, and then you do the same tests and your findings are there or thereabouts, how can your car be down on power?

As the sensible lads say above, go for timed runs, using accurate equipment, it's the only way to know what your car is doing and how powerful it is.

Rolling roads are very suspect to me and whilst they can surely be used to demonstrate improved output after mod's, this is about all they are good for.

I have had this debate on scoobynet and I even spoke with the guy who does the testing at Prodrive to get an informed answer on it and there are simply far to many variables with these things for them to be anything but inconsistent.

If you can do some 1/4 mile runs and achieve (I think high 12's to low 13's) the spec'd numbers then your car has the correct power. Simply won't do the times if it is lacking in power for some reason. In order to achieve these times a car as heavy as the RS4 needs 400+ bhp
Another test is to floor it a few times and if your response is "wholly f*ck, this car is quick" then it's probably around the 400 mark

PetrolDave wrote:

jonathonturner wrote:if a 414 bhp car is timed by the manufacturer and independant journalists and organisations and they are all punch in at around a certain point, and then you do the same tests and your findings are there or thereabouts, how can your car be down on power?

+1

My car does 359bhp on one road, 369 on another, 396 on a third. With no difference other than a change of oil. Don't take r/r results as gospel.

Personally, I'm quite sure in my own mind what the answer to the power problem is.

If the guys who test the cars day in day out across multiple countries (as opposed to enthusiasts who monitor the performance of their own individual car) have an opinion, it is probably justifiable.

As for inaccuracies, I'd be surprised if the inaccuracies associated with drag testing are any better than those associated with a RR...anyone with a GTech Pro and/or VAGCOM will explain the deltas.

For the figures the RS4 spits out, +0.2 secs is ~40hp isn't it...

But my principal concerns are not really with the power.

Certain aspects of the RS4 design are brilliant.

Certain aspects of the RS4 design are shocking. Some of these will ultimately affect the car's health/power and are, IMHO, unacceptable.

I'd like Audi to address these issues.

Thats all.

You are right, there is no conspiracy.

Is a local dealer able to accurately test the bhp of the car?

Anyone know any good dealers in sussex?

Thanks!

the only way to test it accurately is to remove the engine and test it according to the EEC/DIN standards...
next best is multiple timed runs...if your numbers match the reported results and the more accurate calculators, forget about it and enjoy the car...
if you use a chassis dyno make sure it actually measures losses, not one that uses a plugged in' correction factor...

if far off, check for vaccum leaks, some folks had them, once fixed the car was as good as new...

you imply you've done dyno runs...post them so I can pick them apart...lol