D4 S8, not that thread is necessary...

[ttboost]

...as there is plenty of consistent data online to support my opinion. After 9 months of ownership, I LOVE THIS CAR. I wanted one when they first came out, which I think is about the time I bailed on my RS6, but $120k is stupid for a car, so I found a few substitutes until the prices were here on this planet. At the risk of a long boring read, I paid $42k with about 70k on it, I bought DP's on Ebay from the Russians, got a custom tune from a local guy and on pump it made 595/695 at the wheels. It runs awesome...and before everyone starts ragging on me about pics, it's an Audi, they all look the same...just google 2013 Audi S8...mine is phantom black with a black gut, carbon and the B&O.

Relatively the same exclusivity as the RS6 (obviously they made more of these), but expensive to maintain unless you are handy, and parts CAN be expensive, but we all know where to buy parts now. After a month of ownership, I had a lean code, that turned out to be the PCV box, Very common, but also very easy to fix. Spent about $500 on parts and took me about 3-4 hours to fix it (Audi calls for 10hrs).
The point of this, as I've seen some comments from time to time, if you are interested in one, just go buy one, you won't regret it. :S8:

[UrS6]

...as there is plenty of consistent data online to support my opinion. After 9 months of ownership, I LOVE THIS CAR. I wanted one when they first came out, which I think is about the time I bailed on my RS6, but $120k is stupid for a car, so I found a few substitutes until the prices were here on this planet. At the risk of a long boring read, I paid $42k with about 70k on it, I bought DP's on Ebay from the Russians, got a custom tune from a local guy and on pump it made 595/695 at the wheels. It runs awesome...and before everyone starts ragging on me about pics, it's an Audi, they all look the same...just google 2013 Audi S8...mine is phantom black with a black gut, carbon and the B&O.

Relatively the same exclusivity as the RS6 (obviously they made more of these), but expensive to maintain unless you are handy, and parts CAN be expensive, but we all know where to buy parts now. After a month of ownership, I had a lean code, that turned out to be the PCV box, Very common, but also very easy to fix. Spent about $500 on parts and took me about 3-4 hours to fix it (Audi calls for 10hrs).
The point of this, as I've seen some comments from time to time, if you are interested in one, just go buy one, you won't regret it. :S8:

Again, I second this. $45k with 39000 miles. Got a 4 year extended warranty and a Stage 1 tune. I’m not doing DPs because Massachusetts. APR claims 667 at the crank with stage one. This thing is like an aircraft carrier catapult. Smooth, fast, incredible interior.

[kruat]

It's on my short list as well. When I worked for Audi, these were my favorite cars to work on. S6s aren't bad either, but the S8s have the far better interior.

[mrdave]

Please stop making me want another car.

https://porsche.niello.com/details?info=Pre-Owned_2014_Audi_S8_4.0T_quattro&stock=53939U&id=115018

[UrS6]

It's on my short list as well. When I worked for Audi, these were my favorite cars to work on. S6s aren't bad either, but the S8s have the far better interior.

I considered the S6, RS7 and the S8. The interior was a lot of the deciding factor for me. I’m more interested in the part that I have to see all the time rather than the outside that others see. I thought it was interesting too that stock dyno results for the S8 are way higher than the factory claim of 520hp. If you are considering one go watch YouTube videos and you will be convinced.

[ttboost]

^^^Agreed. Most D4 S8 dynos I've seen are around 450-475awhp, which mine was as well, which if you account for 18-20%DL loss, that's around 560-580crank or so...not 520 they claim. And I don't mind a bigger car, even thought he S8 drives like a smaller car to me...but it's all about the interior and creature comforts...

When I bought it, I drove to Atco with the heated massaging seas on, and ran 11.8 at 117 twice, and drove home with the cooled massaging seats on...and plan to do it again soon, now that I am Stage 2.

[ZCD2.7T]

The D4 S8 is a sweet ride, for sure.

There's one thing that has prevented me from considering it as my next ride - the lack of a folding rear seatback. May not seem important to some, but I use this feature and the extra cargo capacity it provides regularly, and it would be a bummer not having it.

There's no question that the 4.0TT is underrated in ALL of its applications - any number of dyno tests plus all of the performance figures back this up.

[UrS6]

The D4 S8 is a sweet ride, for sure.

There's one thing that has prevented me from considering it as my next ride - the lack of a folding rear seatback. May not seem important to some, but I use this feature and the extra cargo capacity it provides regularly, and it would be a bummer not having it.

There's no question that the 4.0TT is underrated in ALL of its applications - any number of dyno tests plus all of the performance figures back this up.

I couldn’t agree more. I ski solo quite often so I was disappointed when I realized the seat didn’t fold and my car doesn’t have a ski pass through. It wouldn’t have stopped me from getting it but now I need to buy a ski rack because I don’t honk my skis will fit in the trunk and I don’t like laying them on a seat.

[ZCD2.7T]

I couldn’t agree more. I ski solo quite often so I was disappointed when I realized the seat didn’t fold and my car doesn’t have a ski pass through. It wouldn’t have stopped me from getting it but now I need to buy a ski rack because I don’t honk my skis will fit in the trunk and I don’t like laying them on a seat.

I was told by an Audi rep that there are electronics mounted on the bulkhead between the back seat and the trunk, so a fold-down seat isn't possible. Not sure about whether a ski pass-through is/was available, though that's also something that I've used frequently on all of my Audis...

[ttboost]

Wait, my car has a trunk?

[DHall1]

Scooby doobie doo

Lowered via vag

APR tomorrow

drag strip on friday.
18821

[ttboost]

You will learn very quickly that you no longer have a need for all of those RS6's, nostalgia be damned....

[DHall1]

I've sold two RS6s in the two months.

The S8 now has full APR suite with switching maps.

Oh my Nellie! Hold on to your shorts....you almost can't drive this car in sport mode around town. I also disabled cylinder deactivation. Keep the globe green....drive your 700hp twin turbo V-8 with its nuts where they need to be. Doh

[mrdave]

Wow... I had no idea those S8s were producing so much power with some simple mods.

[ttboost]

oh they don't...they're VERY hard to make fast and VERY expensive...do not buy one...(you're welcome)

[DHall1]

Hehe...you sound like a politician tt

[ttboost]

Hehe...you sound like a politician tt

Nope...just trying to do the right thing...and keep someone from making the same mistake you and I did...

[nubcake]

4.0tt is notorious for misfire issues & a bunch of other troubles.
I'm yet to see one, that actually makes 700hp on dyno. I've seen a few, all of them struggled to get above 650-660. Even though they should be well capable of more.

EDIT: even though they're crazy fast even at 650. :)

[mrdave]

oh they don't...they're VERY hard to make fast and VERY expensive...do not buy one...(you're welcome)

Phew! Glad we got that cleared up or I might have had to get one. :hihi: :rs6kiss:

[DHall1]

I'll take my misfires on the way to 10.90@128

[ttboost]

I'll take my misfires on the way to 10.90@128


Zakly...

[nistah]

General question on the D4 S8, love the car and was curious about maintenance and weakest links on the platform....does this 4.0 TT eventually have the same carbon build up issue the RS4 and other new S models are experiencing. Not a deal breaker at all but good to know ahead of time, these look really attractive in the market right now!

[ttboost]

I've had mine for a year and a half and I've spent about $600 on maintenance and more on mods, which is just a tune and DP's. They say the turbos go bad, but mine have 80k on them and still make 21-22psi with no issues...

[DHall1]

10.90s@128mph on a tune

Having owned RS6s for the last 13yrs....I can deal with some maintenance

lol

[DHall1]

My first trip in shitty da with hot temps

11.11@125mph

stage 1

i have no idea what I'm doin and almost put this car in the 10s first time out.

[Cmnair]

Damn! APR stage 1? Also these were underrated from the factory.

[DHall1]

Yep, APR makes a good program for the S8/RS7.

1.7 60ft

learned the proper launch and shift technique for this trans and picked up .2ths

[ttboost]

Same here...but stage 2.


18828

[DHall1]

You're right. You need the APR tune

[ttboost]

APR Stage 2 done...now I have to get to the track...

[DHall1]

Boom boom baby! Can you tell the difference?

[ttboost]

Seat of the pants. a little less TQ, but at least I can launch now...I think it's still adapting...only driven about 20 miles after the flash...

[DHall1]

Do you know the trick to allow full power on upshifts?

did you make it to the track?

[ttboost]

No and No. Hasn't stopped raining for a month. Next opportunity is Tuesday night or Friday night...

[DHall1]

In dynamic

no burnout...

turn off traction control in sport mode

pull up to line and stage

MASH the brake pedal! This activates full upshifts.

You just gained .2ths. Thank you veddy much

[s8prtotype]

My RS6 is for sale so I can buy one ;)LOL

[ttboost]

Yeah, I guess I knew all of that. I thought maybe there was another secret I wasn't aware of...unless "mashing" the brake is critical? Do you have to "mash" the brake,. or just hold enough so it doesn't pull you through the lights? Do you mash the throttle while you are mashing the brake, or just modulate it slightly, and then floor it when you let off the brake?



In dynamic

no burnout...

turn off traction control in sport mode

pull up to line and stage

MASH the brake pedal! This activates full upshifts.

You just gained .2ths. Thank you veddy much

[ttboost]

You will be severely disappointed with the power and the reliability...



My RS6 is for sale so I can buy one ;)LOL

[DHall1]

Mash and modulate. If you hear blips or throttle cut between shifts you did it wrong

and I've sold 2 rs6 to buy one. No looking back. Apr downpipes on order. 10.80s here we come

[ttboost]

So no "barking" between shifts?

[nubcake]

So no "barking" between shifts?

Yeah.
Also known as "AMAX" mode. Full power shifts.
Think it's enough to just floor both pedals (after doing the ritual with ESP etc DHall1 mentioned), then let go of the brake pedal.

[ttboost]

Interesting..thanks guys. Been driving this car for over a year and never really gave a thought to how hard I was pushing the brake while power braking...

Yeah.
Also known as "AMAX" mode. Full power shifts.
Think it's enough to just floor both pedals (after doing the ritual with ESP etc DHall1 mentioned), then let go of the brake pedal.

[s8prtotype]

You will be severely disappointed with the power and the reliability...

HA! Downpipes and a tune or everything I've had to do to this C5 to "hopefully" come close to those ET's LOL

I'll take my chances on the S8.

[DHall1]

I bet it was not engaged

its literally .2th difference in the 1/4

get ready to go well into the 10s


Interesting..thanks guys. Been driving this car for over a year and never really gave a thought to how hard I was pushing the brake while power braking...

[ttboost]

I was talking to APR the other day and it seems they still can't address the counter, as they don't sell the TCU...yet. I'm also pretty sure I am over the "200" or so launches...if in fact this applies to the ZF's...



I bet it was not engaged

its literally .2th difference in the 1/4

get ready to go well into the 10s

[ttboost]

Yeah, so in doing some googling, it seems the procedure is this:

1. ESC off (not sure if you hold until brake guard is off too?, I usually do.)
2. Pull it back into Sport.
3. Push brake firmly (apparently MASH it)
4. Push throttle gradually while RPM's rise (eventually hitting the kickdown switch as well, which I never did)
5. When tach stops, let off brake and keep throttle mashed.




I bet it was not engaged

its literally .2th difference in the 1/4

get ready to go well into the 10s

[DHall1]

It's the duck foot rat technique for a D4. LOL

for those old old timers that remember what we did to launch the ol RS6 crate

[ttboost]

Exactly!!!


It's the duck foot rat technique for a D4. LOL

for those old old timers that remember what we did to launch the ol RS6 crate

[ttboost]

Guess it was my time...


188541885518856

[DHall1]

You getting the silly rabbit RS7 cold side package? We got the last set in stock this week

we have a set coming for our Sprint blue 14 S6. Same deal snapped off the drivers side shaft

[ttboost]

I found some a little cheaper...

[DHall1]

Did you have to put the front carrier in lock position to get the intercooler out?

how did your oil screen look?

you goin with the updated audi parts or ditching the screen?

need more pics

[ttboost]

Did you have to put the front carrier in lock position to get the intercooler out?

how did your oil screen look?

you goin with the updated audi parts or ditching the screen?
need more pics.


Nope. And you only have to remove the front top cover to get the passenger airbox out to get the batwing out. This is my 2nd go around as my PCV went soon after I bought it. 3 hr job. Removing turbos adds an hour to that.

Haven't figured out where they are yet, and whether I will replace them or leave them out.

Likely buy replacement cartridges.

<strike>
</strike>Pics of what?

[DHall1]

Oil screen is under that distribution cover. Where your rags are left in the valley.

Screen gets plugged>no oil for turbos=boom go the center cartridges

funny, pcv was just done on mine. I pulled all the audi records before buying. Stupid audi tech left broken clips everywhere. Sum bitch

[ttboost]

Oil screen is under that distribution cover. Where your rags are left in the valley.

Screen gets plugged>no oil for turbos=boom go the center cartridges

funny, pcv was just done on mine. I pulled all the audi records before buying. Stupid audi tech left broken clips everywhere. Sum bitch


Yeah...I guess Audi gets 10hrs to do the PCV repair...I did it in 4hrs the first time...3 this time...the extra hour was getting turbos out. Not hard., just a lot of stuff in the way...Dealer wanted $10k to fix this..told them to eat bag of d*cks. I'll have it fixed for $2k and 4 hours of my time. Just conflicted on the screen. Many say just eliminate it, and do oil every 5k or so...I was doing that anyway.

[DHall1]

RS7 turbos up and running on our S6.

We just yanked the screens.

S6 Stage 3 here we come.

[ZCD2.7T]

...This is my 2nd go around as my PCV went soon after I bought it. 3 hr job. Removing turbos adds an hour to that.

Audi just extended the warranty on that PCV valve on 4.0TTs, so depending on the situation, some people may be eligible for reimbursement if they paid for replacement.

Mine failed at about 65K miles while the car was still under CPO warranty, so that's good, I guess...

[nistah]

Audi just extended the warranty on that PCV valve on 4.0TTs, so depending on the situation, some people may be eligible for reimbursement if they paid for replacement.

Mine failed at about 65K miles while the car was still under CPO warranty, so that's good, I guess...

That's good news, I'm looking for an S8 2013 & newer in Nardo Gray seems to be difficult to locate tho

[DHall1]

I have a Stage 2 APR Daytona gray for you. :-)

its fast. Lol

[ttboost]

Audi just extended the warranty on that PCV valve on 4.0TTs, so depending on the situation, some people may be eligible for reimbursement if they paid for replacement.

Mine failed at about 65K miles while the car was still under CPO warranty, so that's good, I guess...


Yeah, just got the letter the other day. Mines WAYYY out of warranty, and I changed it myself...not sure they will help me...

[ttboost]

So car is back up and running good. $2500 for SRM replacement turbos and TSB kit. I bought the new oil lines too, for $100, but wouldn't do that again. Mine were fine. Replaced turbos, screen and oil pressure relief valve. I was going to eliminate the screen, but elected to go ahead and install the new screen, as the original one lasted 84k miles and this one flows better and I plan to change oil every 4-5k miles now. About 4-5 hours of work all in, and worth it to save $10k. I would change this screen again in 30-40k miles.... just because.

18891188921889318894188951889618897

[DHall1]

Are the srm RS7 wheels larger than the S8 oem?

im thinking about that bg engine flush in addition to 5k oil services

[ttboost]

Are the srm RS7 wheels larger than the S8 oem?

im thinking about that bg engine flush in addition to 5k oil services

Same turbo

[DHall1]

That explains why the S8 is so dang fast with just a tune.

Plus is almost half the price of a RS7. No brainer

[ttboost]

That explains why the S8 is so dang fast with just a tune.

Plus is almost half the price of a RS7. No brainer

RS7 is only faster because it has more power to start with and is about 400lbs lighter...but I'll stick with my S8, thank you ..

[LaserSVT]

I have a Stage 2 APR Daytona gray for you. :-)

its fast. Lol
I know I know, necromancing the thread but I aint been on here since I sold my RS6 you helped me with so much. But now I too have a stage 2 S8 in Daytona gray. :) LOVE IT!!!!!!

https://scontent-dfw5-2.xx.fbcdn.net/v/t1.6435-9/242397101_10221105414128306_843729667918219729_n.j pg?_nc_cat=100&ccb=1-5&_nc_sid=730e14&_nc_ohc=c4fHMF4J5iMAX_lkfN9&tn=nBgHhfIOF_gIOoju&_nc_ht=scontent-dfw5-2.xx&oh=b67dd0d37cbc3cf27e6d3fa7bca7fc2f&oe=618110A2

[ttboost]

Although I do miss mine, I'm loving the Cayenne turbo S now...

[RS Sick]

Did the oil screen job as PM. Replaced with JHM serviceable kit.
https://www.rs6.com/attachment.php?attachmentid=19583&stc=1
old screen wasn’t too bad

[RS Sick]

Valley cleaned up
https://www.rs6.com/attachment.php?attachmentid=19584&stc=1

[RS Sick]

Oil lines attached
https://www.rs6.com/attachment.php?attachmentid=19585&stc=1

[RS Sick]

Did the PCV while I was in there
https://www.rs6.com/attachment.php?attachmentid=19586&stc=1
lines fully installed

[RS Sick]

Stock intakes were deteriorated beyond repair, weird because the clamps weren’t too tight.
https://www.rs6.com/attachment.php?attachmentid=19587&stc=1

[RS Sick]

Decided to “upgrade” intakes, looks good IMO and BOVs are audible now.
https://www.rs6.com/attachment.php?attachmentid=19588&stc=1

[RS Sick]

91 octane APR file with full weight, crap tires, crap DA. Trap is a little low do to slightly smaller diameter tires than factory. Would probably crack 10s (barely) on the 100 octane file
https://www.rs6.com/attachment.php?attachmentid=19589&stc=1

[fbatwork]

Ok gents - finally doing the jump to an S8 - I have found a 2013 with 34,000 miles - anything I should be looking at or new concerns?

Thanks!!

[hahnmgh63]

Did 13's still have issues with the Turbos? There is a TSB but I don't have it on which years for the 4.0t, check Mx records.

[fbatwork]

Did 13's still have issues with the Turbos? There is a TSB but I don't have it on which years for the 4.0t, check Mx records.

Canada has a recall for the oil strainer / scraper that causes turbo failure - Audi Canada has indicated that the VIN in question doesn't have any outstanding issues - I am certain that they didn't actually change the oil strainer until 15 so I have asked how they determine what vehicles qualify...

I am not familiar with Mx records... a link would be appreciated!

Thanks,

[hahnmgh63]

I just mean the maintenance history from the previous owner(s) or Audi. I know JH Motorsports makes an improved kit for the strainers.

[fbatwork]

I just mean the maintenance history from the previous owner(s) or Audi. I know JH Motorsports makes an improved kit for the strainers.

Got it - I had seen the JHM kit and will likely install it sooner than later. It's interesting - as I said Audi has a recall in Canada for it but it is only specific cars... not sure what the difference would be as I would think that they were all built with the same strainer.

Thanks again!

[fbatwork]

Bought the car, while it doesn’t look as good as the RS6, the performance is awesome. The car is impeccable. Owner had all of the recalls / maintenance done including the oil strainer.
https://www.rs6.com/attachment.php?attachmentid=19675&stc=1
https://www.rs6.com/attachment.php?attachmentid=19676&stc=1