A6 FATS time comparison...

[Robsa6]

Hey all I was wondering if any other A6 owners were tuning or playing with their cars using FATS to compare their progress? I just hit 3.7 on a good flat stretch of highway and the car is faster than it's ever been. I am excited to see if anyone else has times they want to share and to see if I got more in the car or not.

[Royal769sr]

What do you have done? Nice fats times

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[LINDW4LL]

Hey Rob, you're running BWK04s, right? 93 octane?

Sounds like a strong car if so.

[Robsa6]

Hey Rob, you're running BWK04s, right? 93 octane?

Sounds like a strong car if so.

Yeah 93 octane with PJko4's Self tuning (for the last year and a half ) I'm looking for a good meth kit to see about getting rid of the timing pull. Thanks for the compliment it's been a long journey! Here is a clip of my car in action a couple weeks ago:
https://youtu.be/kAP80HOoU8Q

[Robsa6]

What do you have done? Nice fats times

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See my signature. Thanks a lot! Your self tuned too right?

[aysix]

My A6 pulled 3.0-3.2 Fats and put down 480whp for comparison.

[BlackOnBlackA6]

Alright Gents, I'm an old man... What does FATS mean? I don't feel like guessing or ass-u-me-ng.


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[julex]

Alright Gents, I'm an old man... What does FATS mean? I don't feel like guessing or ass-u-me-ng.


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For the Advancement of The S4... comes from B5 S4 crowd with the same power train. Basically a 4,200 - 6,500 RPM pull in third gear on a flat piece of road.

[Royal769sr]

Fats does sounds better than FATA. Hey what's your fats? Or Hey what's your Fata ( for advancement of the A6.)
Something must be wrong with my car. Or this 91 is THAT terrible. New pump and e85 next

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[Robsa6]

My A6 pulled 3.0-3.2 Fats and put down 480whp for comparison.

Now that's FAST! wow. you running ko4's and 93?

[Robsa6]

Fats does sounds better than FATA. Hey what's your fats? Or Hey what's your Fata ( for advancement of the A6.)
Something must be wrong with my car. Or this 91 is THAT terrible. New pump and e85 next

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I hear ya. I picked up 2 tenths when I changed my fuel filter... I know hardware before software lol

[Royal769sr]

Dang 2 tenths!? Man. I need to get on that. I wonder if my FPR :) is bad

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[Racin2redline]

I'm at 5.35 seconds
BW ko4s on straight 93
a6 01e trans in an allroad
225/40/19 tires

car feels fast but fats say it's slow so idk

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[Royal769sr]

Pretty sure that answer will be No lol

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[Racin2redline]

I would like to see somewhere in the 4 sec range

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[julex]

I'm at 5.35 seconds
BW ko4s on straight 93
a6 01e trans in an allroad
225/40/19 tires

car feels fast but fats say it's slow so idk

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That's a bit slow for this set up. You should be able to easily land in 3.5s area once the car is tuned properly and you add some meth to it. In respect to A6, Allroad is about 300lb heavier than A6 so that's one penalty and then it also has 8-9% larger wheels so that adds up to estimated fats. But then your tires are undersized so you should not incur as much penalty though. That is slow and you need to find out why.

I had ~3.0s fats on original allroad tranny and 255/40-19 wheels on BW k04. In winter I could easily dip into 2.9s. Now I have 2.5 -2.6s fats on tial 770 and A6 01e tranny so much longer third gear than back when I had allroad 01e.

[Racin2redline]

That's a bit slow for this set up. You should be able to easily land in 3.5s area once the car is tuned properly and you add some meth to it. In respect to A6, Allroad is about 300lb heavier than A6 so that's one penalty and then it also has 8-9% larger wheels so that adds up to estimated fats. But then your tires are undersized so you should not incur as much penalty though. That is slow and you need to find out why.

I had ~3.0s fats on original allroad tranny and 255/40-19 wheels on BW k04. In winter I could easily dip into 2.9s. Now I have 2.5 -2.6s fats on tial 770 and A6 01e tranny so much longer third gear than back when I had allroad 01e.

sorry 255/40/19

I'm thinking the speedo is off from the 6 speed swap. I can't see dropping 2 seconds off the fats time

already running 23psi , the timing looks a little light in recent logs with very little CF , but I can't see even aggressive timing pulling in 2 seconds

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[Royal769sr]

That's a bit slow for this set up. You should be able to easily land in 3.5s area once the car is tuned properly and you add some meth to it. In respect to A6, Allroad is about 300lb heavier than A6 so that's one penalty and then it also has 8-9% larger wheels so that adds up to estimated fats. But then your tires are undersized so you should not incur as much penalty though. That is slow and you need to find out why.

I had ~3.0s fats on original allroad tranny and 255/40-19 wheels on BW k04. In winter I could easily dip into 2.9s. Now I have 2.5 -2.6s fats on tial 770 and A6 01e tranny so much longer third gear than back when I had allroad 01e.

So the a6 has longer 3rd? Hmm. Maybe when I get this 5120 hack down things will be better.

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[Racin2redline]

So the a6 has longer 3rd? Hmm. Maybe when I get this 5120 hack down things will be better.

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no a6 has bigger wheels , 3rd should be the same as s4.

my 3rd with the 19s ends at 115 I believe ?

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[Royal769sr]

Oh okay cool

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[Robsa6]

Yea I can get to about 105 with the tach showing 7000 in third. So running to 115 seems like it would add up to slower times no?

[LINDW4LL]

I'm thinking the speedo is off from the 6 speed swap. I can't see dropping 2 seconds off the fats time

I don't think I've ever heard of a transmission swap causing a speedometer error. Just download a speedometer app on your phone and verify.

Not sure how you drive around without knowing if your speedo is accurate or not!

[Racin2redline]

I don't think I've ever heard of a transmission swap causing a speedometer error. Just download a speedometer app on your phone and verify.

Not sure how you drive around without knowing if your speedo is accurate or not!

It is accurate I've checked lol, it's just the only excuse I can think of

[Robsa6]

racing to redline :you got the allroad rear gear still? its like 4.31 isint it? the A6 is only 4.11 seems like that would help some. I had a real hard time getting under 5 seconds until I re timed my cams and then it got a little faster. I was out by +4 passenger -6 drivers

[Racin2redline]

racing to redline :you got the allroad rear gear still? its like 4.31 isint it? the A6 is only 4.11 seems like that would help some. I had a real hard time getting under 5 seconds until I re timed my cams and then it got a little faster. I was out by +4 passenger -6 drivers

no I swapped the whole a6 drive train
and yes the shorter axle ratio in the autos and manual Allroad help get it moving faster.

timing is good on the car never been an issue ?

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[Robsa6]

no I swapped the whole a6 drive train
and yes the shorter axle ratio in the autos and manual Allroad help get it moving faster.

timing is good on the car never been an issue ?

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Guessing you have good compression across all cylinders and you have boost leak tested? Sometimes I swear these cars hate us and then there is a lightbulb moment and all is well for a bit then back to trouble shooting. what tune are you running?

[Racin2redline]

Guessing you have good compression across all cylinders and you have boost leak tested? Sometimes I swear these cars hate us and then there is a lightbulb moment and all is well for a bit then back to trouble shooting. what tune are you running?

Yes boost leak tested to 25psi. Compression I'm going to assume is good because the car doesn't use any oil.

Custom daz tune, getting a few revisions from Mirza at vag auto werks now hope fully we can narrow it down

[Royal769sr]

Good luck.! I am now redoing my tune as well. With less boost and more timing and more e85

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[Robsa6]

Good luck.! I am now redoing my tune as well. With less boost and more timing and more e85

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I wish I could get e85 here... Id love to utilize it.

Want a copy of my file? maybe there is something for us both to learn

[julex]

Implanting 01e from A6 with 4.11 final means that even though you just equalized the the drive train itself in respect to A6/S4, you also handicapped yourself since the shafts have to spin up larger wheels than what's dangling at A6/S4's ends. This penalizes you when trying to compare FATS times, probably several % points more than what mere wheel circumference of wheel would indicate. Why? Because aero resistance, which becomes the main opposing force to torque propelling the car, exerts force exponentially larger the faster the car moves and with larger wheels, the car has to simply gain more delta speed and start/stop the run at much higher speeds than A6/S4 has to in order to conform to FATS specs. Allroad also suffers from worse CD, look at post listed below for more detail.

Much better approach would be to do "Anyspeed FATS" run which basically is a run that goes from 57-91mph (equivalent to 4,2000-6,500 rpms in third gear on A6/S4) and remove the RPM dependency. As a result, you will end up starting run in lower RPMs than 4,200 and also finishing at lower than 6,500.... but it will give you a better idea where you are if you were doing a drag race with A6/S4 next to you.

Allroad stock 4:35 data:
4200 rpms is around 50mph
6500 rpms is around 80mph

A6/S4:
4200 rpms is around 58mph
6500 rpms is around 91mph

Allroad 4.11 with A6/S4 01e on 255/40-19 (from my logs):
4200 rpms is around 65mph
6500 rpms is around 102mph

Here is my take on it from 6 years ago:
http://www.audizine.com/forum/showth...s-Allroad-FATS

Anyway, 5.35 time is really really bad. There is something going on and unless you're in real hot climate and at altitude, you need to find out what. Also install meth kit, it will make the car considerably faster.

[Royal769sr]

Just finally got my tune redone with the 5120 hack and I decided to take it slow. I did not increase my load yet from stock just adjusted my fuel and timing. This time though I think I went in the correct direction when "adding" timing. With less boost my car feels much better now and after I revise it 1 more time I will give an updated fats.

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[Royal769sr]

I wish I could get e85 here... Id love to utilize it.

Want a copy of my file? maybe there is something for us both to learn

And thanks for the offer. Didn't see this before

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[Racin2redline]

thanks for the explanation julex, I already understand much of what you said, and I know my fats time is not comparable to an s4 or even an a6, I was not hoping to compare to anything. only thing comparable is another 6 speed swapped allroad and from what I've seen from other members with the same setup mine is not far off and even faster than a few


I know there is something up with the car and the tune, I'm looking into it now , I didn't have much desire to tune myself but I think I might have to, to get where I want

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[Robsa6]

I love the fact that I've tuned my car myself. While I'm sure I've not gotten all I can out of it and I'm sure there are people who can tune it for me I get the satisfaction of the accomplishment. I also however get the frustration of trying things that make me slower or less drivable. It's been a long road to tune to here but there are awesome resources out there that helped me along the way. Good luck and keep posted about your progress weather you do decide to tune it or if you find a problem that speeds you up. Still gotta be a cool ride!

[Royal769sr]

Agreed. Frustrating to do it yourself but just goes along with owning an Audi (if you work on it yourself too) can't even think of how many hours upon hours I have spent reading reading trying uploading my file to my car hoping not to blow the motor, just to put my old file back on while I readjust the new one again and again. But well worth it

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[dannyn424]

i think I hit 4.6 before my last revision (tiptronic) when daz told me to turn my meth kit on and never got a clean log cause my hemi tbb lifted up on peak boost causing a undiagnosed boost leak for a while. That's where my tune is currently but would love to log it and refine it further. I think im gonna replace my fpr soon ;)

[Racin2redline]

yeah I do everything myself always have from start to finish. I trust basically no one
while I've never tuned I've spent hours on hours researching myself to understand how it all works , I give you guys doing it yourself alot of credit , there is so many variables and things to know




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