Hi all. I have had a remap on my PTT by a very reputable tuner here in the UK (DMS automotive) and the result based on a set of dyno dynamics runs was 602 bhp and 675 lb ft torque. Absolutely no modifications at all to the car. Standard turbo with sports exhaust. In terms of feel, the mid range of the rev range has really picked up and you can definitely notice a massive difference over the standard car.

Now I have read about other PTTs achieving roughly 600bhp/600lb ft torque with remaps. I am slightly worried about my torque figure though as the last thing I'd want is to bend a rod or damage the PDK box prematurely. I never launch the car and drive quite sensibly but I do want it to last. Something tells me I should cap the torque at around 600 lb ft but I cannot find any info on what is safe on a stock engine and gearbox.

Any thoughts appreciated.

 

You need a lot more mods to get close to the limits of what the PDK can handle. A simple tune won't harm your transmission.

Did you do a base dyno before the tune?

 

I've spoken with Mr. Brombacher (of FVD Brombacher - the Porsche tuner in Germany) and he told me the panamera was built a lot stronger than the 911 - able to handle quite a bit in stock form safely. According to him, their stage 4 tune is very safe and it pushes 691hp at wheels (close to 800 crank hp) and limits the torque out at around 700lbs.

The PDK is overbuilt and has a limp mode that protects the transmission that kicks in around 715ft lbs of tq. Dodson is coming out with PDK reinforcement kits that will allow for more tq if needed but a tuner should be able to tune up to this and limit tq safely. The fuel system can handle 800hp as well before it needs upgrading. All in all, I've been told the panamera is built like a tank so have fun with your tune and mods.

 

Thanks guys, certainly reassuring re: the PDK. Eliah yes we did do a base dyno which was 520bhp and 520lb ft torque. So the torque pickup has been much more impressive than the hp increase.

In terms of the engine, I assume it is the same as with the PDK? Do any of the big tuners recommend replacing rods after a certain torque figure? I know in my GT-R the tuners recommend anything above 620lb ft and you need to consider it. Different engine I know, but that is what prompted me to ask the question.

 

Wow those are impressive gains on the torque side... you are actually fairly close to your limit there (about 40 tq away) from what I've been told before the pdk begins going into limp mode. Brombacher did not mention a need to build the engine and I haven't heard of anyone doing it (gemballa etc) but I don't think anyone is really going that far over 700lbs of torque either since the Dodson pdk reinforcement units are just now coming out (really no way to upgrade past this tq limit without a PDK upgrade).

 

I assume these numbers are at the crank.

The Tq figure is extremely optimistic, almost raising the BS flag.
Take it to another dyno, correct the numbers and then get an idea.

I assume you too have a 2014+ Turbo.

If all checks then you have a mofoking beast!

Any ways enjoy it in good health.

 

Thanks Pbread, useful info. I used dodson circlips in my gt-r gearbox and they were great quality.

MIA yes those are cark/flywheel figures. To be totally honest I don't trust dynos at all especially when converting figures at the wheels vs crank in 4wd cars. My car is a 2011 turbo with sport chrono and sports exhaust. It feels massively more urgent to the point that when flooring it in second gear causes temporary loss of traction in the rear wheels even in bone dry weather. This never used to happen when it was stock.

I'm going back to get an exhaust fitted next week so will run it again to see what it shows. Tempted to cap torque somewhere between 600-650lb ft. Don't like putting cars through dyno runs due to the stress on them but will hopefully be a useful comparison.

 

No PTT that I know of has gone 520HP if it's not a new 2014, so if thats your base, I'd be worried about it.

Once you go a little more HP on these cars, the tires tend to spin, let alone when you have 22's. Even with wheel spin the car can drive itself, which I kinda dont like it, it's too sophisticated.

Take it somewhere else and dyno with corrected parameters and let us know.

Good luck and please do the downpipes, I HIGHLY recommend them.

 

I have cooked a PDK with about 600whp. Turbos, intercoolers, dump tubes, sw

 

FALB - what happened to your car? It was the one built by Switzer wasn't it?

 

Can you tell us more? This the switzer build?

 

http://www.gtspirit.com/2011/06/22/o...sche-panamera/

It says +200 lbft torque to the wheels , thats a lot of torque

 

Please can you tell us more details ?