ShakeNBake

I find it very very hard to believe that Porsche would allow sportauto to get an unhealthy car, review the results, and then allow them to publish the results.

TT Surgeon

I also unloaded my 2011tts for the same reason, I found the ptv very unsettling on the track, very noticeable.
I'm also concerned that this was a real car, not a ringer with an immediate track issue. What happens to the rest of us when we get this code at a track day, does it create warranty issues with track use.

Macca

But they didn't did they! As mentioned in the German article the dyno tests couldn't be completed up to factory cut off RPM due to an ECU fault that Porsche had to re flash!

ShakeNBake

Lots of cars have the same issue on a 2 wheel dyno. Early E9X M3 had the same issue for a while. My E46 would not dyno until it was flashed either. Pretty common.

Macca

I didnt realize that. Ive done around 10-12 hours on dyno and spent some time with the Dynapak and never had that issue. Maybe its modern cars due to electronics?

ShakeNBake

I think it's just adding the "feature". Not a priority until people start dynoing the cars.

Macca

That's strange. Looking at the trace it goes to 7500 rpm only. Not sure what system would tell it to turn off at that stage. Must be some form of protection. Maybe something to do with the PDK-S. the PDK-S will not allow revs to exceed 4500 rpm when the car is in neutral for example...

sunnyr

When Motortrend recently dynoed the F10 M5, they had to test it on a AWD dyno though the car is RWD, cause if the difference in the speeds between rear and front wheel would exceed a certain limit (100mph?), the ECU would shut the engine down. Maybe Porsche uses something similar.
From 4:30 -

Macca

Very interesting. thanks for that Sunnyr. No idea why they do this but interesting to know...

MarcusG

Unhealthy is not a great word but my boss used it quite often at BMW. I shouldn't have used that word. I just remember that with a fleet of completely identical optioned cars, there were always some that are stronger than others.

You never know. There's so much to go wrong a perfectly operating car can develop issues very quickly at the hands of journalists. I used to see it first hand. If you've never been at a magazine test you should try to see one first hand and how nerve wracking it it is. All you do the entire time is pray nothing goes wrong with the journalists ripping on the cars.

CaymanR-Racer

The car already had that problem on the way to the dyno (on the road) ... so it wasnt a problem that was caused by being on the roll ...

But i still dont understand the suspension settings... even compared to the C2S car that was tested they seem far too "conservative", even though the C2S was on "Max Performace Summer" tires ... I mean, can cup tires actually work with these numbers?? (all in degree+ min not decimals)

-----------------------------------------------991 GT3-------------------991C2S
toe front:------------------------------------ +0°06' -------------------- -0°15'
caster front:-------------------------------- +9°06' -------------------- +7°49'
camber front:------------------------------- -1°35' --------------------- -1°53'
toe rear:----------------------------------- +0°12' -------------------- +0°05'
camber rear:------------------------------- -1°23' --------------------- -2°26'

-eztrader-

bmw losing a handling and feel comparison to mercedes? wow - bmw M has really lost their focus.

MarcusG

Well than that settles it. Porsche sent them a hurt car.

ShakeNBake

yep...it's come down to that, not to mention BMW doesn't have a performance halo car to convince me that it even knows how to do it anymore.

Daniel L

Wow, I stopped keeping track of AMG cars. I had no idea the E63 switched to AWD and twin turbo. 541 HP to the wheels in an AWD car is ridiculous.