?

[matthew.lewis2]

...

[approved]

cant give bad service over there...

you get taken away for 'questioning'

[toomuch]

cant give bad service over there...

you get taken away for 'questioning'

double LOL...

[ArthurPE]

please give us details and results of the acceleration tests after they are performed...
it's interesting that's how the factory gauges performance/power

[jackwood]

Question about the engine braking thing (I have just picked up my car after having a new short engine fitted and am in the 1000mile break-in period):

Surely engine braking is worse in a lower gear? In 6th there would be less engine braking than in 3rd or 4th? Otherwise what would be the point of changing down a gear to aid braking? If engine braking is bad at break-in, I need to completely re-think the way I drive. I try to use brakes as little as possible and always heal'n'toe down-change and rev-match.

I have heard often, and often use, mixed engine revs as being the best break-in procedure for new engines. Not pampering the engine, but not thrashing it either, and making sure all fluids are at full temp before extending above 4000rpm. Unfortunately I wasn't responsable for the break-in of this cars original engine. I just want to make sure it is a good as possible this time around!!

[matthew.lewis2]

...

[SR71]

My guess is that there is some confusion in this thread about engine "break in" procedures, engine "braking" and engine "breaking" (as in "breaking the engine")!

I also suggest that if your oil reached 140C and is a 5w-30 its absolutely shot and you need to change it out straight away.

Sounds like a pretty daft procedure to me...

Do Audi know that your oil temps reached that maximum? Out of interest, what do they have to say about that?

My latest oil analysis, after ~4000 miles in the car, revealed that the flashpoint was down to 220F (100C)! That is normal operating temperature for my car!

The oil showed a significant reduction in viscosity compared to the previous sample with only one track day in the interval. During that track day the oil reached 125C.

FWIW.

[PetrolDave]

I also suggest that if your oil reached 140C and is a 5w-30 its absolutely shot and you need to change it out straight away.

I saw the 140C figure and took a deep breath.

The highest I've ever seen in road use is 115C.

At 140C I've have thought many of the volatiles in the oil would have evaporated and it would no longer have the correct viscosity and/or detergent content.

[matthew.lewis2]

...

[SR71]

While we appreciate you feeding back the info Matthew, the above sounds bananas.

The car is limited to 7000rpm (check the DIS) until the oil reaches 60C so how the hell can anyone get a RR result beyond that then?

Like Arthur says, the acceleration tests will be interesting to hear about.

[PetrolDave]

Comments noted guys. I have already spoken to the guys concerned. I have the all clear to continue.

I'm beginning to really doubt if they know what they are talking about...

One thing to mention, there are certain parameters that Audi have to consider a power run (RR) correct. One of these is oil temps. The oil temp when doing a power run should be no more than 60c, and the power run should start when oil temp is at 55c.

The oil temp doesn't appear on the DIS until it reaches 60C, until then you get a message that the rev limit is 7000rpm. So how do you know when the oil temp is 55C to start the run?

IMHO holding the revs between 6000-7000rpm for 10 minutes is almost guaranteed to take the oil temp well over 60C, probably even over 100C.

[matthew.lewis2]

While we appreciate you feeding back the info Matthew, the above sounds bananas.

The car is limited to 7000rpm (check the DIS) until the oil reaches 60C so how the hell can anyone get a RR result beyond that then?

Like Arthur says, the acceleration tests will be interesting to hear about.

You're bl00dy right! I'd forgotten that it was limited at those RPM's.

Let's see what Wednesday brings and I will report back further. I only seem to be muddying the water at the moment.

[2manytoys]

Hi Guys,

My RS4 just put down 263whp (196wkw) flat from about 6400-7900rpm. What the!?!?! Could this be an Intake Flap problem? (no fault codes) See below graph.



Thanks, Mal.

[pippyrips]

It could be the effect but the common cause for this sort of thing seems to be vaccum related. Have you disconnected the exhaust valves?

MacRS should be able to give a good view of things to check

[2manytoys]

Yes, but they are plugged with a screw and also have a clamp around it. It shouldn't be leaking but I'm going to check tomorrow. If it was leaking would this throw up an error (I don't have any errors, VAGCOM'ed straight after the run)

Thanks, Mal.