Car feels slow... Oh no, it *is* slow!

[MartWilliams]

repeated 0-60 5 times, times were all 3.5/3.6 seconds, plotted hp prior to battery trick was 501 on vagcom which was inline with her last rolling road run, plotted bhp after battery reset 541bhp

kinnel and I thought it was just a faulty rear view mirror making everything look so small

Hey Tony, I've not found the code for the radio yet, don't suppose you could see if you have it? and pm it me.

Cheers

Mart

[Mr V10]

repeated 0-60 5 times, times were all 3.5/3.6 seconds, plotted hp prior to battery trick was 501 on vagcom which was inline with her last rolling road run, plotted bhp after battery reset 541bhp

I have VAG COM, how can I use it to check my cars BHP?

On my old A8 you could reset the car to learn your driving style all over again by holding the accelerator down for 30 secs with the ignition on/engine off. Made a difference. Not sure if it will work on the C5...

Also when my S8 felt slow ( and I hear this is a common problem), 0-60 was around the 8 sec mark. The con rod on the actuator valve had snapped. Once I replaced it (£140 from Audi) they don't sell the rod separately and you have to buy the valve with it, it transformed the car, now does it in 6.3. It could be this? You can check it by taking off the engine cover. I will post a pic in a minute.

P.S I managed to get a metal rod from America quite cheap so if anyone needs one I will check my old e-mails for the invoice and company web address. £35 Delivered and made out of metal not plastic like OEM so should last longer.

[Mr V10]

This is the valve, it is located by the radiator end of the engine. I know the C5 S6 has them and my 2001 S8 has these so I am assuming the RS 6 will too.

Pic 1 shows broken arm.
Pic 2 shows new arm.

[batty]

i think that rod is to control the variable length inlet manifold. i'm pretty sure the RS6 doesn't have this due to forced induction.

[ecain63]

Other than the time taken and codeing of RNS, there is no disadvantage to resetting the system. I do mine everytime i have done a vag check - about once a month. Remember to put it back on vag com after the reset as you will probably hava a code or 2 pop up. When i disconnect mine vagcom brings up an ignition fault (think its due to voltage / current levels outside perameters during disconnection). Easily cured by starting the car, turning it off then starting the car again. Then just clear the fault on vag.

[Shoppinit]

On my old A8 you could reset the car to learn your driving style all over again by holding the accelerator down for 30 secs with the ignition on/engine off. Made a difference. Not sure if it will work on the C5...

That's interesting. How did you find that out. I came across this on another forum:

Throttle adaptation procedure for a C6:

1. Stick key in ignition and turn to the "ON" position.

2. Step on throttle all the way down and hold for 5 seconds.

3. Turn key all the way off while still holding throttle down.

4. Release throttle 2 seconds after turning key to "OFF".

5. You might be able to hear the reset taking place. You're good to go after a minute.

I tried this technique on my A4 but it did not work. Then from another forum, it stated (again for a6/c6) to hold the throttle down (step two) for 30 seconds (not 5 seconds). I followed step 3 and 4, and heard a loud click. the hesitation disappeared. My a4 went into motion at 2400 RPM's instead of the little old lady's 3400 RPMS, a half a second likely turbo lag. Before the reset it took up to two seconds to get the car to move!

It sounds like what you're talking about.

I know the TCU learns your driving style, could it be this? I'm pretty sure only the Audi dealer (and happy hackers) can reset its memory though.

[Daveperc]

So presumably someone must know which fuse to pull, or better still into which line to fit a simple 'push-to-open' switch so that when sat at a long light I can switch off my ignition, press reset for five seconds, and then leave like brown stuff from a shovel??

Which fuse/line needs sorting??

Dave

[alpinestars]

Car didn't feel so quick today. I told myself that I was just getting used to it, but after adjusting my suspension, I took it out for a drive and grabbed my G-tech on the way out to check the 0-60 times. Best I could get was 0-60 in 5.8 seconds.

I thought the 0-60 on a standard car should be more like 4.5 sec?

I checked with the vagcom: no boost problems, no error codes anywhere.

There's no rolling road anywhere near me, so that's out (that's why i bought the g-tech in the first place).

Any ideas anyone?

Out of interest what are you doing 30-70 in? I don't like doing 0-60 runs as it's too harsh on the car.

[Shoppinit]

Out of interest what are you doing 30-70 in? I don't like doing 0-60 runs as it's too harsh on the car.

Same here, but I needed to test it quickly and I didn't have anywhere handy to do 30-70 runs. This'll be my next test. I'm wondering if the gearbox isn't limiting the torque in first. Having said that, I should be able to achieve the factory times, or close to - especially with an autobox.

[Shoppinit]

www.fastsaloons.com lists the 30-70 time as 4.4s for the RS6. Does this sound about right?

[Shoppinit]

I tried the battery thing. I didn't notice any real difference other than now my clock isn't set and it won't set itself anymore How do I get this back. I haven't got the little antenna icon anymore.

I did another run afterwards, and even though it didn't feel quicker, the g-tech measured 0-60 in 5s. This sounds more like it, although I wonder how accurate this device is. It also measured a 30-70 time of 3.6s which doesn't sound right.

I also tried the accelerator thing. Doesn't do anything on the RS6.

[ecain63]

You have to reset the clock through the menu function.

[Shoppinit]

Yeah, I looked through and there was only the option for setting the time manually. I've never had to do this with my car, it gets the time through the airwaves.

[ecain63]

Mine doesnt seem to have this function (unless im blind). Is it something that is linked to the entertinment system?

[Shoppinit]

Just looked in the manual. It uses radio signals to set the time. If, after 3 days, it can't find a signal it reverts to bog-standard clock mode. I'm not having that... Right, vagcom is coming out again...