People have run water/meth on their RS4's, it doesn't help.
A ton of misinformation in this thread.
OP, RS4's generally don't suffer from the same timing component problems that V8 S4's do. The guides/tensioners have updated parts. TBH, it was mostly 04 and 05 S4's that see most of the problems with timing components in general.
In regard to the carbon build up, its a DIY job. Or you can pay a few hundred bucks every ~10k miles to have it cleaned. JHMotorsports is supposedly testing a solution that prevents carbon build up.
Also RS4 + bolt ons =12.2 @ 111 mph 1/4 mile
The only other things he's mentioned are:
Brakes and replacement brake components are expensive b/c they are unique to that car (and the Gallardo I think).
OEM stock parts (wheels for instance) are really expensive and near impossible to find used.
Not much information exists for DIY projects since most owners are wealthy and they just pay other people to fix the car when it breaks.
They do sound glorious though
I have a B7RS4, original owner since June 2006. So some info:
1. Carbon cleaning -- I get it done every year or two. Time consuming, but not horrible.
2. Gas Mileage -- I get 17 city / 23 highway, which is far better than the 14/19 that my friends with E90 m3's get. Although, they don't get carbon buildup.
3. Parts -- really not so bad, since many parts are shared with A4's. With the right connections, it's also pretty easy to get OEM parts at dealer cost (I do).
4. Ease of maintenance -- I find it to be pretty easy to take care of, and mine is almost 6 years old with 51,000 miles on it.
I find the car a hell of a lot more fun than the B8S4. That said, an E90 m3 is also a great choice.
Where's the context we are missing?
Sorry to say, the B8 is terribly ugly, I'd go as far to say one of the ugliest cars on the road today. That picture is especially bad.... combine that with the ghetto fabulous LED DRL's.... no thanks. Maybe I'm crazy, but you know what they say about opinions.
Last edited by dmorrow; 04-06-2012 at 09:54 AM.
as people mentioned the v8 s4, once the chains and tentioners have been changed, they are good for the rest of the life of the engine, as most chains are? or has the issue not been fixed with updated parts
In all honesty I think something like this may be a longer term solution than just "decarboning" every 20-30k. What about an injection system that runs essentially on demand, and injected something like an acetone/atf solution, or anything else that would help keep the intake and valves clear. Im aware water/meth wont work, but i think all it may need is something that actually dissolved the buildup.
Its fairly clear that the main issue with many DI engines is carbon buildup in the intake/valves, and unless you rip out all the emissions controls/egr, etc, Im sure this will continue to be an issue.
but back to the main question, I would say the main reason not to get it is because there are alot of cars out there that may be less "raw" but perform almost as well with less issues.
Personally I would take a 335i with a chip, and extended warrenty for the fuel pump, and call it a day. I like the RS4, but IMO the B6, and B7 chassis cars seem very dated compared to the B8, and its competition.
Last edited by Jettavr666; 04-06-2012 at 10:58 AM.
You like the looks of the B7 RS4 – enough to strongly consider buying one over its distinct disadvantages – but think the B8 S4 is the ugliest car on the road?
I really don't know what to say.