How fast is your RS6 from 100-200km/h = 62-124mph ?

[RS8]

How many seconds does it take for your car to go from 100-200km/h ?

100-200 = 62-124mph

I think a stock RS6 will make it in 11 seconds.

You can use Performance box=best OR download an APP to your telephone to measure this.

Android=
RaceDroid Pro

[4everRS]

I've just been thinking about finding this out.

Now, to do this, are you suppose to be cruising at 62, then take off?, or just take off from any speed less than 62, and post the interval between 62 and 124?

[lswing]

I would say cruising at 62mph, then go. Question is, do it all in 4th gear to avoid the shift, or start in 3rd and shift around 105-110mph (about redline IIRC).

Torque has timing settings, but I'd never fully trust one of the cell phone GPS devices, although they do measure speed accurately when driving normally.

[RS8]

I have a manual 6speed diesel gearbox in my car and starts at 90km/h=55mph and give full throttle and shift gear at about 150km/h= 95mph.
I use third and fourth gear, also tested only with fourth gear.

I have set on the performance box that it should measure 100-200km/h & 100-150km/h.

[4everRS]

I have a manual 6speed diesel gearbox in my car and starts at 90km/h=55mph and give full throttle and shift gear at about 150km/h= 95mph.
I use third and fourth gear, also tested only with fourth gear.

I have set on the performance box that it should measure 100-200km/h & 100-150km/h.

So what are your numbers?

[RS8]

On only fourth gear I made 7.6 seconds with around 1 bar boost, and with gear change 3-4 I made 7 seconds,
but my stock RS6 injectors I have 22.8ms opening time at 6k rpm on them with 1 bar boost, So I have to change injectors now.
And 100-150 I got 2.7seconds on third gear.

[ttboost]

The 60-130 is a very popular performance metric for the 'roll-on" racer type. I've done 60-130's in just about all my performance vehicles. I seem to recall my RS6 running about 14sec stock. I have to re-download my VBox software to find my files. The goal is to be a full power from 60 until 130. The "best" or "correct" method, is to start at 35 or 40mph, so as to be a full power by 60 MPH, accelerating to 130. If you have a turbo car, that has the ability to brake boost, this would be a slight advantage, helping you be at full boost by 60. An automatic is fairly intuitive. A stick car typically would start in 3rd and accelerate through 4th...

[ttboost]

Found it. 14.37 60-130 for my bone stock 03 RS6. Never got to run it with the stick, but probably in the 8-9 second zone.

[4everRS]

That race droid pro app is f-ing worthless. I should probably get a vbox to be accurate.

[RS8]

I have not tested the race droid pro but it was just the one I found now where you can test 100-200km/h. But perhaps some one know about a better APP?
I drive myself with vbox.
15596

[RS8]

It would be fun to know how fast Milka's beast is. :revs:

[ttboost]

I forget this forum is for ALL RS6's, not just our pigs. That's a pretty fast RS6 you have there RS8. I just checked my 996tt logs from 2009. My average 100-150 is 2.66. I'm assuming it's NOT an 03 RS6.

[RS8]

My engine is RS6 -03 BCY V8 biturbo.
But with custom built exhaust manifolds, upgraded turbos, wagner ic's, big custom fuelrails, big fuel line's (10mm=3/8" inside) catchtank with Walbro 450L fuel pump, Turbo smart AN8 fuel regulator, better intake camshafts.
And of course a manual transmission.

The problem now is my to small RS6 injectors..
I have bought new Deka 630cc/60lbs injectors but they were too long :doh:

Soon I will instead buy EV14 1000cc/95lbs injectors (with the right length for RS6) so I can try E85 etanol in the future :incar:

[lswing]

That's a serious setup, very nice. I've been doing my own tuning and getting close to 75% IDC with the stock Bosch injectors when adding about 25-35% more fuel that stock.

I was using VAGCOM to measure Injector Pulse Width duration, and then using a standard calculation to get Injector Duty Cycle. I've heard not much more that 80-85% for the Bosch injectors.

I know your numbers might be different, but what did you max out your stock Bosch fuel injectors at? Thoughts on the fuel pump keeping up?

[lswing]

My engine is RS6 -03 BCY V8 biturbo.
But with custom built exhaust manifolds, upgraded turbos, wagner ic's, big custom fuelrails, big fuel line's (10mm=3/8" inside) catchtank with Walbro 450L fuel pump, Turbo smart AN8 fuel regulator, better intake camshafts.
And of course a manual transmission.

The problem now is my to small RS6 injectors..
I have bought new Deka 630cc/60lbs injectors but they were too long :doh:

Soon I will instead buy EV14 1000cc/95lbs injectors (with the right length for RS6) so I can try E85 etanol in the future :incar:

Can we just put this as a stick for the post every month or two that says..."what's the best way to make my RS6 really fast?".

[RS8]

At 1bar I have 22.8ms opening time on injectors and on 0.7bar I have 18ms
With almost standard engine I had 18ms first at 1.3bar boost.

So now I have at least the same power on 0.7bar that I previously had on 1.2bar boost.

[lswing]

At 1bar I have 22.8ms opening time on injectors and on 0.7bar I have 18ms
With almost standard engine I had 18ms first at 1.3bar boost.

So now I have at least the same power on 0.7bar that I previously had on 1.2bar boost.

Do you have the RPM to match the Opening Time to get the IDC?

Here's the calculator I've been using. http://www.stealth316.com/2-calc-idc.htm

[RS8]

It was between 5000-6000rpm.
I can see if I have log file on it.

But It much be 100% or more? ;)

[lswing]

It was between 5000-6000rpm.
I can see if I have log file on it.

But It much be 100% or more?

Ha, yes, calculated IDC of 104.5% at 5500 rpms and your reading of 22.8ms opening.

I'll figure with this, being a calculation based off multiple parameters, it's not 100%.

But sure seems like you had your injectors at 100%, and they can be right, the just stay open, you just don't want them to stick open:)

[Zorb]

Fuel injectors are not able to operate in this manner. Max duty cycle is about 80-85%.

[lswing]

Fuel injectors are not able to operate in this manner. Max duty cycle is about 80-85%.

I understand that is recommended max, and would not go above that, but I thought 100% duty cycle, is 100% open, 100% of the time.

I'm using the numbers to roughly gauge tuning. Basically when stock my calculated IDC was around 70%, after boosting fuel 25%, my calculated IDC was around 79%.

[ttboost]

Yes, running your injectors static will almost guarantee a new engine.

[RS8]

In this test, I removed the power cable to my N75 valve to run the lowest boost possible on my upgraded turbos.


Two test, first 19.9ms with 0.76bar= 11psi
Next test 20.8ms and a top boost at 0.8bar = 11.6psi


If 23ms i maximum possible then 20,8 must be 90% duty cycle.


I don't have a log file from when I tested 1 bar = 14,5psi boost.

1559815599

[lswing]

Nice, thanks for the details. Do you know how much fuel you were adding at this point? Main fuel, secondary trim, fuel under load?

I'm working with four parameters here; Fuel under load, Fuel decreasing load, Secondary fuel trim, Overall fuel amount.

[RS8]

I have learned now that at 6000 rpm so the injectors are 100% open at 20ms.


So the easiest to see how much the injectors are open is at 6000 rpm.
In my test2 above with 0.68bar boost at 6000rpm I had 19ms that means 95% duty cycle, despite such a low boost.



3000 rpm 100% is 40ms
4000 rpm 100% is 30ms
5000 rpm 100% is 24ms
6000 rpm 100% is 20ms

[RS8]

we have lowered the ignition by 5 degrees to protect the engine so now I only made 100-200 km / h in 7.6 seconds.
But I also tried to measure in mph, so I tested the 60-90 mph and 60-125 mph.


60-90 is in third gear went at 2.7 seconds
60-125 is starting at third gear then shift into fourth gear at 95 mph and drove to 125 mph in 8.2 seconds.
This is still the standard RS6 injectors and they are now at 100% open from 5000 rpm and up.

Next thing to do is to put in my new EV14 95lb/1000cc injectors.

15654

[RS8]

Here you can see my me7 log on the 60-125mph test, the first image is in third gear and then I switch to fourth gear on the second image (line 56 to 66 is the gear change)


If you look at the three blue lines, the far right line is the MAX opening time that is possible at that rpm and the two blue lines to the left is what the ecu tries to and it is above what is max possible in bank2 already at 5k rpm = my injectors is open 100%

1565515656

[RS8]

My total car weight with fuel and me at the test above was 1800kg = 3970lb

[Bigglezworth]

My total car weight with fuel and me at the test above was 1800kg = 3970lb
I could take a good dump and still wouldn't be anywhere near close to being under 4000lbs. Aside from and 01E, exactly which diet plan did you have your ride on?

[RS8]

With manual transmission you save a lot but then remove the rear seats and all carpeting and replace the front seats with light weight race chairs so you should come down under 4000 lbs

[Ruergard]

And also, this is a, if I remember right a 1997 S8 with an RS6 engine? Ain't those about 100kg less than an RS6 to start with? :)

(I follow your thread on the Swedish community Rejsa. Keep it up! :thumb:)

[RS8]

RS6 was too small for me ;)

So I have built my own RS8 :thumb:

http://i1341.photobucket.com/albums/o754/RallyQuattro/RS82_zps920c59da.jpg (http://s1341.photobucket.com/user/RallyQuattro/media/RS82_zps920c59da.jpg.html)

http://i1341.photobucket.com/albums/o754/RallyQuattro/RS87_zpse636183f.jpg (http://s1341.photobucket.com/user/RallyQuattro/media/RS87_zpse636183f.jpg.html)

[lswing]

Thumbs up, nice work!:incar:

[A4V8swap]

Wow. Nice. Any details on the swap?

[RS8]

I had a manual gearbox from the beginning in my S8.


Here is some work that have been done in my car.


The block must be grinded and welded to fit the S8 starter to manual transmission and make the adapter to the starter motor or buy rebuilding kit available to the RS6 for manual gearbox transplation.


Weld engine mounts on the front engine frame because they are not in the same place on the RS6 engine. and cut out and modify the frame to accommodate pressure pipes to the IC.
And NO, the rs6 engine frame will not fit on a D2 chassie so I can't use that one.


Making room for IC's on the sides = fit a smaller coils container on that side and on the other side move the ABS unit and bend all brake lines to make them fit again on the ABS unit and also remove ac filter dryer and AC pipes etc. to make room for IC


The rs6 and S8 electrical system must be paired = mass job, then a tuning company have to remove all Canbus functions as well as automatic transmission and lots of other fault codes in the RS6 ecu you will have when you start the engine first time.


Modify the pedals and mount RS6 gas pedal because it is electrically controlled to the throttle and not with wire as the S8.


Move the flywheel sensor or modify so it reads right against S8 flywheel and buy Sachs Race pressure plate and sinter clutch disc so they can handle the torque of the RS6 engine.


Modify the fuel system, the A8/S8 fuelpump can handle about 400hp not more, but it will work to fill a catch tank were you have a Bosch 044 or Walbro 450 fuel pump installed, and it will not work to fit better fuel pump directly in the S8 fuel tank.


Move forward the water cooler 2cm to make room for the engine and rebuild the fan cover to fit the RS6 electric fans. (RS6 has 2 electric fans S8 has 1 electric + 1 that spins with multi strap) RS6 has completely different fan control with "ecu" that controls the fan speed instead of a resistor bridge as the S8 have.


Modify RS6 water pipe at the rear on the engine for the pipe to the heater and modify the RS6 water pipe on the side of the engine to the S8 radiator.
even the bottom cooling pipe from RS6 must be cut and welded to fit the S8 radiator.


Install an big oil cooler in the front and fix hoses to it.


Making new servo hoses and new servo jar (A4/RS6 is much smaller) or move the big S8 jar.


Modify or build new RS6 downpipes and new exhaust I have 2x3inch first, then it is 1 x 3.5" from middle of the car to the rear.


Modify RS6 airbox on the engine so it fits in the S8 engine compartment and then you have to move a bit even on the S8 conservator that sits on the side of the engine in the S8.
Then you have reinforcements on the inside of the hood that needs to cut away, otherwise you can not close the hood with RS6 airbox on the engine.


S8 cruise control will not work on the RS6 engine, trip computer will not work and it is hard to fit everything with AC parts still there, so the easiest is to run without aircondition.


Is probably something I forgot ..

[RS8]

http://i1341.photobucket.com/albums/o754/RallyQuattro/RS81_zps4215ed6e.jpg (http://s1341.photobucket.com/user/RallyQuattro/media/RS81_zps4215ed6e.jpg.html)

[RS8]

http://i1341.photobucket.com/albums/o754/RallyQuattro/RS83_zpsb4e3e4e4.jpg (http://s1341.photobucket.com/user/RallyQuattro/media/RS83_zpsb4e3e4e4.jpg.html)

[A4V8swap]

Amazing. Thank you for the response that you provided. More than I expected. It's good though, just in case I come across a lot of money and have the time to do this now I'll have a good idea of what needs to be done.