JCviggen's misano B7 RS4 - work in progress

Thank you. I was trying to help. And have a understanding of some features and signs.

Didn’t want to go through all the work to find the link but this was one of the things I was thinking might be happening. There is a point where the ecu is not unlocking a trigger point. So this triggers an wait for it… it triggers an event.

Ahh you beat me to it. That’s actually the first thing that came to my mind after reading his symptoms.

Being friends with an expert makes one an expert? Impressive leap of logic.

I know enough about Bosch Motronic to see that what is happening is not a protection kicking in. Because I know what those look like. So the contribution to the topic or problem was nil. Certainly as it turns out it is probably a software issue after all - the opposite of what was suggested. Then there was the unprovoked ad hominem which is rather uncivilised if you ask me.

Thanks to the other person from down under who was actually useful. I might ask JHM for the fix (if it exists) when I get back.

If you know so much why start a discussion?

Seems for someone who knows everything you’re always asking for help.

As for what Justin knows or doesn’t know, I’ve met him a couple of times and have seen him posting on forums for 7 years. He has also been very involved with helping jhm’s tuner gather data on many of these cars and discusses the calibrations at length with him on a regular basis. That’s why I suggested you listen to him.

Once again just because you’re new and don’t know much about the scene, the people, the companies, the history…don’t assume nothing happened before you showed up.

As usual great post. Some people aren’t smart enough to see the light in front of there face. JC is one of them. Even tho I pointed out the issue that he now thinks it is he is trying to call it something else.

Let me make my point.

People believe this might be what is going on with Jcviggen car

http://audirevolution.net/forum/index.php?topic=2702.0
this link talks about how the jhm tune LA has interference on some foreign cars. In the link you will note that the tuner references temperature as a safe requirement for full LA. So in some foreign cars the jhm tune has safe measurements that cause events to happen preventing full use of the LA system.

I originally tried to point this out.

One of my first posts

[quote]The data looks like the jhm tune is trying to protect your car from something.
[/quote]
Oh well. You can’t help everyone even if your really helping them

If you go back and look I wasn’t asking for help. I mentioned the LA didn’t seem to work and the rest ensued.

Justin pointed to the car which has “never run right”. I said the ECU was doing something it shouldn’t. Guess who was right? I guess intend land of the blind the one eyed are king.

I asked JHM and they are aware of the probable LA issue but as they lost contact with the guy in Aus before they got to test any potential fixes. I’ll be happy to try put whatever they come up with, but there is no hurry.

Never mind my phone and its predictive spell check by the way.

Oh well. You can’t help everyone even if your really helping them
[/quote]

  1. The fix they made along those lines was unsuccessful if you read that whole topic. And even if it was some kind of sensor confusion on behalf of the ECU it is still a software issue not limited to my car which you subsequently blamed.

2)You misidentified the causal factor entirely. You suggested it works fine for hundreds and hundreds of other JHM tuned cars so it must be that my car has issues thus I’m stupid. Yet it took someone else to remember this issue which had surfaced before my time here on 2 separate non-US cars.

You were both wrong and unhelpful, in short.

There is no substitute for experience. When I have a potential issue it makes sense to go and ask people who would have seen the same thing before before I go and spend loads of time reinventing the wheel. That said, I will happily forego your expert advice on any more issues I may encounter. The less frequent posters on here appear more reliable as sources of information and more civilization to boot. Thank you.

We get that your slow. I understand neat when I point out the obvious to you and you see you were given the answer you try to make it into something different. We all have figured out your not very smart. You keep posting dumb and wrong information. The RS4 rotor info was more of the laugh fest.

So because your slow I’ll do this again for you.

Oh well. You can’t help everyone even if your really helping them
[/quote]
Since you don’t know what you don’t know. When you read other threads you will read that jhm fixed the LA and that some cars have no issues others have a situation where the jhm tune is trying to protect the car from something.

lol what was I wrong about? That you should STFU and listen instead of telling everyone how smart you are? Nah, I was bang on there.

I was talking to the person I was quoting, not you. Apparently it could be interpreted in two different ways.

Anyway, to put the rest of the pissing contest on hold for a minute, since I got back earlier this week I’ve done quite a few runs and I’ve concluded the car is running fine. Most of the performance deficit has disappeared after I removed the extra battery from the car and inflated the tires to a normal pressure. The guy who put them on had set them to 27-28 psi ::slight_smile: Good thing I didn’t hit any major potholes yet.

Temperature increases explain the rest of the performance delta. I did a few tests between 18 and 25C and for ever 3 degrees C increase in that bracket the car went 0.1s slower in the 3rd gear test. In the end it did an 8.00 at 21 degrees C which means it should end up back at 7.6-7.7 when winter returns. Assuming roughly 0.1s gained from the JHM tune. Still looking at the exhaust, only thing is that I kind of like how it sounds now. Worried that even a resonated JHM will drown out most of the delicious intake sound.

I want to run a hose from the front bumper to the airbox flap intake to bring down intake temps. So much appears to be lost from sucking in warm-ish air at that point. Given the climate here I’ll just ditch the aux rad on that side and run a 90mm hose through the gap. Should be pretty noticeable. I managed to do a few runs back to back and the second run was always considerably quicker with intake temps 3-4C lower. Not an issue if you’ve been cruising on a highway for the past half hour, but with the driving I get here it’s not ideal.

Unfortunately I’ve had to cancel the road trip in the RS4 after some objections from my other half and a time/effort issue to get the car back to Moscow afterwards. Instead I’ve dropped the car off at a place nearby which will - at last - do the gearbox rebuild. Just had to go with my gut feeling selecting a shop, no useful info or recommendations to be found. So fingers crossed.

I’ll try to drive it to Norway year when the car won’t have to come all the way back. Instead I’ll pick up a 991 in Hamburg and make the trip from there. Should be a good drive, about 2000 miles in a week. The RS4 would’ve been more fun but at least I’ll get a better idea of what it’s like living with a 911. I’m guessing I may have an issue getting my fishing poles into it.

It won’t look as good, that’s for sure. Love the passive aggressive look of the B7.

http://www.greenringer.net/various/IMG_1436s.jpg

Delicious intake sound??? Lol you are one of those guys too stuck on turbocharged cars.

Not sure I see a connection. Turbo cars have crap intake sound because the compressor is in the way. If anything I enjoy the NA sound more after driving so many turbo cars. I like to hear the v8 “hammering” at the front rather than a booming sound from the back. It’s more subtle. Both good but ideally for me there should be a bit of balance between the two. Just personal preference, you can’t argue about taste.

The latest development seems worth mentioning on here: I’ve bought a JHM exhaust. Quite possibly the only one in Russia.

Whilst on a random googling spree I came across a link to a Russian Audi forum (the same where I sold my RS6) where a bloke was selling his JHM exhaust. I had assumed, being Google, that the link was years old. In fact it was about 7 months old, the topic was started in February so I was already kicking myself for not noticing it earlier.

Then I flipped to the last page of the topic and the guy was still bumping and lowering the asking price. Sent a PM, payment 30 mins later and 5 days later the huge box arrived all the way from Ekaterinburg 1500 miles away.

It’s the perfect spec as it has cats, resonators and even the (not quite necessary but still appreciated) black coating on the back boxes and tips. Should go well with my Ti wheels. The previous owner claims to have used it for 1 week and about 200 miles of driving as he couldn’t live with the drone between 1500 and 2200. That seems to contradict what I have read before about the JHM so I’ll put it on and see how I find it.

The price for all this goodness was about 910 USD worth of Russian money - 60K Rubles. Perhaps not the bargain of the century but it has to be close, given that the set would cost more than 3 grand with the coating plus a crapload of shipping and taxes at this end.

Old ad of his with pics and youtube vids http://www.drive2.ru/l/5240205/

https://a-a.d-cd.net/bd8f0dcs-960.jpg

Quite a stroke of luck if I say so myself. Looking back I did waste money getting my precats gutted though.

Wow that is quite a steal. That guy must have been desperate. What part of Russia are you in if you don’t mind me asking? I’ve visited Moscow a couple of times as well as some more rural parts. Driving there is pretty fucking crazy most of the time. Do you plan to drive your RS during the winter?

Cheers. I’m in the very center of Moscow. I can’t call driving that crazy around here, mostly just traffic jams. It’s certainly more “liberal” in terms of interpreting the rules of the road but it’s not the wild west it was 10 years ago. Still, no speeding fines until you go at least 20 clicks over the limit and you have to do properly nuts speeds for the fine to be more than 8 bucks.

I do drive it in winter, I enjoyed my RS6 in the snow for 4 winters and I had half a winter in the B7 but not much snow to speak of. They’re pretty awesome in the white stuff on winter tires, ESP off and I’m happy as a clown. Finally get to move the car around a bit and feel the limit of adhesion whilst traveling at altogether sensible speeds.

To user drob23: thank you for the heads up via PM about the flanges/welds, I’ll see if this is something that needs to be sorted before they go on. It would be a doddle while everything is still off the car anyway. I can’t reply to PMs (lot of sense that makes) so there you go.

I just looked on the product page for the downpipes and it appears the flanges are offset like that by design. So I think you have nothing to worry about https://jhmotorsports.com/shop/catalog/exhaust-downpipes-jhm-b7-rs4-stainless-steel-275-inch-p-1375.html

that’s an amazing deal

did he powder coat the mufflers? If they came like that from JHM, keep an eye on them as they had some problems with the company that they outsourced the powder coating to.

As for drone that’s weird. There’s drone present at those RPMs, but it’s not that bad, and it’s only if your foot is in it. If you are accelerating a car hard at 1500 RPM you’re probably doing it wrong. I’m a picky mthrfkr and I’m totally fine with it.

Now…when I got my exhaust on my old B7 S4 a few years ago and didn’t know what drone was, I thought I had ruined the car. JHM told me to drive it for a month and see if my opinion changed. Over that month I figured out that you just need to drive around it.

If your car is droning, your car is telling you that this is luggy and an uncomfortable RPM range to accelerate in or have your foot in it. After that month or abotu 2000 kms of driving, I was fine with it.

The RS4 drones considerably less than my 4.2 B7 S4 did on top of that, so I think it’s a total non-issue now.

Fortunately for you, that guy didn’t try it for a month and gave up right away.

I believe the mufflers came coated this way from JHM. They’ll have to deal with a fairly harsh environment here so let’s see how it holds up. For this kind of money either way I’m happy drone or no drone, flaking or no flaking. It’s not like I do thousands of miles here in 6th gear at 1800 RPM either.

For how little I drive the car I think the noise will be enjoyable rather than annoying, even more so when it won’t be daily driven anymore next year. And like you say I’ve got 6 gears to choose from so it’s a matter of molding your driving habits around the drone point. Hope to get it fitted sooner rather than later.

Damn that’s a deal of the year. I guess the seller did want to get rid of it ASAP, lucky you!