JCviggen's misano B7 RS4 - work in progress

Some random things:

  • After standing still for 3 weeks under 2 feet of snow in -20C temps I had a P2015 implausible signal from the intake flap sensor on bank 1 as soon as I started it. Luckily that’s the most easily replaceable of the two I believe. It was fine for a week after but returned once more on a longer drive right after I took it to 8 grand in 2nd and 3rd. That was a few days ago, I hope it stays away, maybe warmer weather will help. If not I’ll have to start by changing the sensor and see if that solves it.

  • Much like a pain in your body that’s gone, it’s surprisingly easy to not notice when an issue you had previously no longer occurs. The car had a very annoying stumble on cold winter mornings last year until it warmed up. Well, not anymore. Either the JHM tune or the exhaust appears to have eradicated it completely as it’s fine even at absurdly low temps now.

  • I’ve booked a Nurburgring trackday for April 28th. So by then I’ll somehow have to move the car by about 2000 miles West-South-West. It’s not ideal to have uncertainties of the first trackday, but if I didn’t book it now it’d never happen. The trackday itself costs around 600$ so I’m hoping to not have any major breakdowns. Planning to bed in the Carbotech XP12 pads on my old and pretty worn rotors, this will probably screw those up but bedding in new track pads on new rotors is a nightmare as they want to be treated in opposite ways. I’d like to buy the 380mm JHM rings but between the shipping cost, import duties and the exchange rate I’ll probably go for stock albeit through Brembo which is a lot cheaper for the same thing. The Ring is long, high speed and low ambient temp and I think with good enough brake fluid the brakes will do OK.

  • Not taken delivery of the 981 yet but have already managed to buy race headers for it. And it turns out you can actually gain power and tq by fitting 500$ exhaust tips. :-X Just in case you all thought the Audi scene was a bit silly.

Nice to hear the updates coming in. I and several others noticed the that JHM tune did help with cold starts and how the car used to struggle with it before the tune

Have fun at the ring!

What tires are you going to run? I noticed the Carbotech Xp10 were able to out-brake a set of Michelin PSS.

Also, if you’re buying Carbotech race pads you can get them to pre-bed the pads for you before shipping. It’s a $20 option but it sounds like it will be ideal for your situation.

I’m thinking of getting Cup 2’s. With the car’s weight and the long laps at the Ring I’m afraid my PSS will be overheating/greasing by the end of a single lap. And brand new Cup 2s should do pretty good if it rains, except for standing water obviously.

Another reason why I probably won’t be using my MPSS set is that I’m driving the car to Geneva first at the end of this month and when I look outside here it strikes me as a tad early to switch to summer tires. Real shame to have to sell a set of pretty much new MPSS but taking them along brings complications at the border. Easier to flog them and buy again in Europe.

I had to get these Carbotech pads from a distributor in Sweden who had them in stock, no option for pre-bedding but they were the only ones at a remotely reasonable price. I’ve got a long list of things I need to bring from the US if I ever visit again. That’s a great option though, you should be able to get all pads like that.

One further observation: in really cold weather the exhaust doesn’t drone as badly. When it warms up it gets quite a bit louder too, on a lukewarm start without the SAI running it’s pretty docile for about 2 mins until it warms up. It’s clearly a very fine margin that my exhaust is only just at the wrong end of.

Been a while to say the least, update:

Car’s still alive and well, albeit now hibernating in Belgium most of the time. Doesn’t seem like an ideal solution, I kind of miss it here in Moscow now that it’s winter. Just not ideal to park both cars here at the same time, I’m thinking that I might bring it back here next year and try to find a place to store the rather less winter-suitable Porsche.

Some maintenance was done recently, an old friend of mine who owns a B7 RS4 has a shop together with another bloke who has a B7 RS4 so I figured I’d let them to the work.

Gearbox came off for what I believe was the 3rd time in 12 months to replace the flywheel. Last thing I could think of to explain the terrible shift quality. I had initially tried to get a new LUK flywheel that would be identical to OEM but it turns out they’re not sold in Europe. Probably there’s a contract somewhere that says they aren’t allowed to sell them direct to customers for less than half what Audi wants for it and it doesn’t apply to the US.
After shipping and import taxes this didn’t look like a great idea.

Then I came across a company in the UK that makes billet single-mass flywheels that are a direct fit replacement for the OEM dual mass. So you use the standard DMF clutch but you lose a couple KG on the flywheel (somewhere in beteen OEM and a very light aftermaket one) and the only price to pay is a bit of chatter at very low revs. Beautifully made flywheel it is, too, and it only cost me something like 420 USD shipped to my door so it was cheap to boot.

http://www.greenringer.net/various/flywheel.jpg

During maintenance a leaking rear shock was found and had to be replaced. Expensive thing to fix in the end (including the re-pressurizing of the DRC something like $800 total) but I didn’t really want to move to coilovers if I could help it. A couple CV boots were done as well I believe.

I had given the car to my old buddy to store it for a while at his home, as I was leaving the country and they couldn’t start working on it for a couple weeks. I gave him permission to drive the car for about a week as well (I need to buy insurance on it each time I want to drive it outside of Russia) and long story short I probably won’t be doing that again. While I trust him to perfectly warm up the car before he starts beating on it, putting nearly 1000 miles on it was taking the p!ss if you ask me. I also heard some stories (directly from him to be fair) of how stable my car feels compared to his taking a slight bend in the highway at 170 mph. Okay. Lesson learned.

After collecting the car we drove it to Switzerland and back, and it was pretty flawless. Exhaust is bothersome on long trips but other than that it was good fun. It feels quick, too. Once every thousand miles or so I still get the CEL for implausible signal from one of the flap position sensors. I had asked for that to be fixed but it wasn’t and I needed the car. Still, turning it off and on clears it and then it takes ages to occur again so next time around maybe. The shifts have definitely improved and going into first gear from a stop is much easier now. It’s not perfect but maybe I’m too sensitive. My buddy kept going on about how smooth my gearbox is compared to his so what do I know.

I hope to do another Nurburgring trackday early '17 but after that I’m not sure the car will stay in Europe as I use it so very little. When I do visit Europe for something specific it often doesn’t make sense to use the RS4 as it costs too much time to drive over and I spend way more on 6$/gallon fuel than it costs me to fly over and rent a car. I do enjoy having it available there but for using it only 3 weeks a year it seems a bit of a waste.

Oh, and I had H&R lowering springs fitted on the fronts only. Always annoyed with how high it sat relative to the rear on the SS+ suspension, that’s sorted now. This pic was right after fitting, not sure if it will settle any lower after a bit of use but this is about perfect for me. May consider using wheel spacers, I have them lying around but for doing silly things on track with sticky tires I like the peace of mind of not running spacers for some reason.
Here’s a pic of it as it sits now, next to my friend’s B7 on 20 inch wheels and spacers.

http://www.greenringer.net/various/rs4s.jpg

Use the S button more often:)nice car man

that daytona Grey with aftermarket Ti package looks fantastic. The big RS4 wheels are so hard to beat.

I would if it did anything ;D

cool thread and a good read so far!

Apologies if this is a stupid idea, but if the exhaust drone is just a portion of the operating range where the sound waves all line up (and thereby increase the volume) could you get away with adding an inch of pipe to the exhaust somewhere? Maybe you lost some length on your exhaust from when the previous owner removed it from his/her car?

I’m not sure, but the previous owner also sold it after 2 weeks because he couldn’t stand it, so I don’t think it has really changed length at any point.

Adding a dead-end pipe of the appropriate length to cancel out the offending frequency seems to be the best bet, but I’m not sure we can get away with the length required. Adding another resonator, as was suggested earlier, could also be a solution but again need to find a good spot for it.

PS: Thanks for the PM, unfortunately due to the sheer genius of this forum I am not “allowed to read it”. Though I can read it in the notification email. Replying is obviously out. Because logic.

would love to hear this exhaust.

I’ve been in several JHM exahust cars including about 60,000 kms in my own. Drone is really a non-issue.

My B7 S4 however drone was unbearable and I fucking hated it.

Weirdly drone is not actually volume. Outside the car, the ‘drone zone’ sounds exactly the same as the 500 RPMs before and after it, volume wise. it’s just inside .

And I’d like to hear another JHM to compare to. Pesky distances. >:(

Mine has to be different somehow because I can’t imagine hearing standards could vary sufficiently to account for the massive difference in perception. The drone is bad enough to make you very aware of the existence and workings of your eardrums, if you stay in the drone zone for a few seconds.

I do remember a situation in which the exhaust is pretty much drone free: after cold starting at -10C and driving off, it takes a few minute to warm up and start droning. While stone cold, for a few brief (but glorious) moments the exhaust is totally fine. On the opposite end of the scale, the worst I ever heard it was when I pulled off the Nurburgring after 2 laps, and that was with a helmet on my head ;D

Hi JCViggen…I used to be a Volvo guy ( T5-R and R ) so I remember you from the Volvo forums . I guess we both migrated to Audi’s eventually owning both Rs6 and Rs4’s . I’m still amazed that your T5-R almost went flat 8 at the Nordschliefe ! and I also just saw your Misano on Boris’ Youtube video…very cool indeed ! you know the Ring quite well man . Props ! I’m planning on being there mid Spring for a few laps.

Do you by any chance remember a guy named Florian ? he had a green 850 T5-R estate, 5spd, caged, very fast around a track as well ?

Cheers !

Mike

who makes that flywheel?

also, i had the implausible flap signal code for the longest time on my car. ended up being the intake manifold flap solenoids. cheap fix at something like $90 for the replacement solenoid.

Hi Mike!

Yes I do miss the old T-5R, should have held on to it, but it wasn’t convenient.

I do know Florian, in fact he’s a good friend of mine. He is also the one who currently owns the shell of my old T-5R and its engine! He is still rebuilding it, maybe this will be the year that it is finally ready. It has some of the components of his old 855, but with a new DMSB approved roll cage and the car has been stripped as bare as it could get and re-painted from scratch. Last time I saw it, it was white. Wiring is in the final stages, it now has a GTX3071R turbo and a Link ECU.

Small world :slight_smile:

TTV racing in the UK. If you go to ebay.co.uk and search for RS4 flywheel it’ll pop up. I dealt with them directly and saved a bit of money in the process.

Are the solenoids easily accessed? I’m thinking of getting the JHM tune option to delete the manifold flaps, apparently they should keep working just fine but gets rid of the codes. Down the line I could then remove them altogether.

Would be a good opportunity to ask them if they could please delete the launch control feature from my map, too, as it’s not compatible with my car and preventing any kind of brisk take-off from first gear.

Drove the car to the Swiss/French alps after New Year, amazing fun on these snowy roads. Awesome car for this kind of thing.

http://www.greenringer.net/various/courchevel.jpg

http://www.greenringer.net/various/courchevel2.jpg

http://www.greenringer.net/various/mountain.jpg

Great pics. The car looks great .

In Belgium before flying back, I used the opportunity of some reasonably long and empty roads to do some performance testing. The JHM map isn’t allowing for a manual launch without the LA cutting in so I had to do a slow start, and winter tires aren’t ideal for rolling resistance but the results were pretty good anyway.

-10 Hz GPS log-
0-60 MPH 5.56s (ouch)
1/4 mile 13.0s at 112.7 (114.8 over the imaginary line)

Screenshots in the video https://youtu.be/zO8biGk-XXI

Here’s another test I “accidentally” did…not even realizing I exceeded my winter tires’ maximum speed rating by 7 or 8 MPH for a few seconds.

http://www.greenringer.net/various/150.jpg

Any idea how decent this 100-150 is? Hard to find any cars to compare to. Felt pretty brisk above 120.

Nice video good shifts. The car looked very strong sounded great