The life and times of my B7 RS4

4.2 V8 32v Naturally Aspirated - 414 bhp
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JCviggen
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The life and times of my B7 RS4

Post by JCviggen » Sat Dec 27, 2014 1:04 pm

Been here for a while over on the C5 RS6 side. Bought a Misano B7 alongside it for now, while I decide whether or not to keep the '6.

I'll get straight to the pics so you lads don't skip over the rest of the text to get to them:

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Right. You probably noticed the Russian plate: I live in Moscow most of the time. This isn't the UK and it's certainly not Germany so the amount of B7s up for sale here can be counted on the fingers of one hand. You can't be TOO picky or you'll never buy one. The Ruble exchange rate being what it is, these cars went from well above EU prices to well below currently. I had been looking to get a Porker 997TT or 991S as a daily, but unfortunately the collapsing Ruble exchange rate led to all the decent ones being snapped up and the rubbish ones now being vastly overpriced. So I went straight to step 2 of my plan and got a B7 RS4 which I've always liked. I'll run the car here for a year, maybe 2, and then bring it to Belgium where it will be stored for occasional drives and trackdays on the Nürburgring. When that happens I'll put in some light Sparcos at the front so I'm not bothered with not having the buckets in it. I don't need the extra bolstering support while sitting in a traffic jam.

Basically I drove two, a blue with buckets but more miles and this one. The blue was slow and quiet. This one went a lot better (still nowhere near my 6 though) and audibly had a lot more of the nice intake sound. Suppose the flap wasn't opening on the blue one.

It has ~46k miles on it, imported 10/2007 first registered 03/2008 and the guy I bought it from had owned it for 2 years as a weekend car. During this time he gave it a new paint job, new headlights, fogs and a new grille. Just to make it look like new again. It wasn't crashed, and I got the old units with it, the lot of them is still sitting in the boot. Not sure if they're worth putting up on Ebay or not, but it's nice to have the originals anyway. It also has a new windscreen which is lovely as all the sand on the roads here in winter creates a heavily pitted sandblasting pattern on it after a few years. He was quite emotional about the car which is a good thing, but the car isn't totally perfect just yet.

Issues:

- Intermittent MIL. Comes and goes. During the test drive some days ago it also briefly displayed the ESP + EPC warning. I talked him down enough from his asking price that I should have enough left in my pocket to let my mechanic sort this, but if anyone has some specific things I should be looking at in terms of sensors or vacuum leaks, I'm all ears.
- Undertray at the front is hanging down at the front nearest to the bumper. Not so bad that I can't go over a speedbump, but noticeable and I risk scooping up a load of snow with it. I imagine this isn't too hard to fix.
- A COLD start at -10°C went well but it sounded like the starter was cranking the engine for 2-2.5 seconds which sounded like a long time. My '6 starts a lot quicker, though it also takes a bit longer than usual in these temps. Thoughts?


As far as modding goes, I'll want to get rid of the precats eventually as they are so bloody restrictive. Maybe a map, but I'd like one from MRC and they're a long way from here.
Last edited by JCviggen on Wed May 10, 2017 12:24 pm, edited 1 time in total.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
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HYFR
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Re: Added a B7 to the stable

Post by HYFR » Sat Dec 27, 2014 1:24 pm

Looks great
SuperSport suspension ?

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JCviggen
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Re: Added a B7 to the stable

Post by JCviggen » Sat Dec 27, 2014 1:30 pm

HYFR wrote: SuperSport suspension ?
Clearly, I'm a bit of a n00b again. I don't know. It's a pretty firm and stiff car compared to the '6 that's for sure. But no less comfortable, the '6 flexes too much.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube

HYFR
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Re: Added a B7 to the stable

Post by HYFR » Sat Dec 27, 2014 1:36 pm

Looks it
Sitting Lower

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geordie jay
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Re: Added a B7 to the stable

Post by geordie jay » Sat Dec 27, 2014 4:23 pm

deffo sitting lower than standard..i love the red RS4 but for whatever reason I think the wheels don't go with the car(don't ask why coz I don't know) they just look out of place lol..why did last owner opt for a full respray?? sounds dodgy?and all new parts that he has fitted is all front end and making it look new again wouldn't satisfy my curiosity as a reason haha...

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JCviggen
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Re: Added a B7 to the stable

Post by JCviggen » Sat Dec 27, 2014 5:02 pm

I agree it's unusual - but the story he told seemed to fit his general character pretty well. Plus, seems rather elaborate to source undamaged headlights, fogs and grille for no other reason than to fit the story. In any case, choice was limited, and I preferred a car that felt in good shape technically rather than one with untouched (and invariably scratched) bodywork. He didn't need to disclose any of this info if he didn't want to. People often use middlemen to sell their car and you'd never have heard a peep about it that way. I considered respraying my '6 last year at one point, it's just impossible to keep your paint immaculate here no matter how you try. Even my roof got a dent in it from ice which fell off a building as I drove alongside. Sigh.

I like the wheels personally. Definitely prefer the darker ones with this colour.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube

CellDamage
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Re: Added a B7 to the stable

Post by CellDamage » Sat Dec 27, 2014 6:25 pm

Yeah the Titanium colour wheels work well with Misano I think - looks like a nice car.

2/2.5 second starter motor cranking time doesn't sound like an issue in my opinion, mine usually takes around 2 seconds from a cold start, today for instance. Although that was after a week of not driving it and my definition of cold is more like 3 degrees C :)
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Re: Added a B7 to the stable

Post by marc1 » Sat Dec 27, 2014 9:56 pm

The car looks great in Misano red mate. Sounds like you got a good car from an enthusiastic owner.

From another thread:

"The build code for Super Sports Suspension is 2ME, whilst the standard RS4 suspension is 2MC."

If you have a look on the option code Sticker in the front of the service book or in the boot, you should see one of those codes listed. That'll tell you if it was supplied with SS+ suspension or not from the factory.

adsgreen
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Re: Added a B7 to the stable

Post by adsgreen » Sun Dec 28, 2014 11:22 am

the slow cranking is probably down to the battery. I'd wage that the higher compression ratio of the B7 gives the starter (and therefore the battery) a much harder time in cold weather.
Most batteries when brand spanking new and fully charged only put out 40% of their capacity when at 0c so -10 must be nearer 20-30%. So it wouldn't take much aging of the battery to cause a prob. As you said a weekend car so not likely to get the big deep charge that it needs to keep it tip top.

ESP + EPC intermittent is probably a dodgy maf sensor. Certainly worth checking first as it's dead easy to swap and shouldn't need a mechanic to look at it. Just be careful when handling them as they are quite fragile.

Undertray is probably just missing some clips - should be easy to source.

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JCviggen
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Re: Added a B7 to the stable

Post by JCviggen » Sun Dec 28, 2014 1:01 pm

adsgreen wrote: ESP + EPC intermittent is probably a dodgy maf sensor. Certainly worth checking first as it's dead easy to swap and shouldn't need a mechanic to look at it. Just be careful when handling them as they are quite fragile.
Thanks!

Took it for its first real drive today. It will drive fine one minute and then it'll throw the ESP + EPC and go into reduced power mode. I've read it could also be related to throttle sensors or the flaps in the mani? It clears itself after a restart and then comes back after a while. The last time it happened I also got the MIL along with it. Time to send it to my mechanic while I'm off for 2 weeks anyway. Sadly the USB-OBD cable I used for VCDS on my RS6 doesn't work on the B7 so I've got to get another one before I can read codes.

On the upside, the engine itself feels strong when the codes stay away. Extra kick at ~5500, great sound and acceleration feels very healthy unlike the other car I tested.

But, the box is going to need new synchros. 3rd gear in particular. Good thing I bargained enough off the asking price that I have enough change to get it all done properly.

Oh, on the starting thing, it caught pretty quickly this morning. Maybe 1 second. About the same as my '6. Afterwards when I did a warm restart with the warning lights on it took a bit longer and sounded slightly more like a struggle.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube

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PetrolDave
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Re: Added a B7 to the stable

Post by PetrolDave » Sun Dec 28, 2014 1:24 pm

JCviggen wrote:Sadly the USB-OBD cable I used for VCDS on my RS6 doesn't work on the B7 so I've got to get another one before I can read codes.
On the B7 you need a CAN plus dual K-line lead as the powertrain (engine ECUs, ABS, gearbox ECU on tip) uses CAN diagnostics and the rest of the car uses a combination of K-line and K2(L)-line diagnostics.
Gone: 2006 B7 RS4 Avant (Phantom Black)

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JCviggen
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Re: Added a B7 to the stable

Post by JCviggen » Sun Dec 28, 2014 1:27 pm

Thanks, yeah I had found out as much on the ross-tech site. I used to have an Ebay USB cable together with a (legit!) VCDS lite copy. Getting the real cable shipped here turned out inconvenient, and aside from poor a update rate during logging it worked as well as it could.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube

adsgreen
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Re: Added a B7 to the stable

Post by adsgreen » Sun Dec 28, 2014 1:33 pm

Manifold flaps don't trip the esp light. Maf sensor likely culprit.
Open bonnet, unclip mad wiring, remove two screws, remove maf

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JCviggen
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Re: Added a B7 to the stable

Post by JCviggen » Mon Dec 29, 2014 7:15 am

Question: for driving it to my mechanic and avoiding limp mode, could the MAF be unplugged? My other cars preferred no MAF to a faulty one in terms of driving, the ECU should be perfectly capable of living without the MAF for a while?

I called around and can't find a new MAF in stock anywhere near me (and I don't have the oddly shaped torx head to remove it anyway)
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube

adsgreen
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Re: Added a B7 to the stable

Post by adsgreen » Mon Dec 29, 2014 10:03 am

Could always try some maf cleaner. Might just be dirty. Torx head pretty standard so should be in any hardware store.

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