Great info BlackHorseTurbo! When can we see some stock 60-130 mph times for reference?

 

Next weekend likely when I get back in town.

 

Cool! Good luck solving the hesitation at high speeds.

 

It only happens occasionally for some reason. I need more seat time.

 

lol at seat time in a cayenne. by the way, you realize that was 6.83 not 8.63. you wrote that but showed a 6.83 from the .dbn

i'm afraid your family hauler may be a tad quicker than mine. your fast car, I'm not so sure yet

will have to line 'em up soon. fast car then cayenne and maybe someday cayenne towing fast car, haha.

 

Lol. Crap you're right. Dyslexia kicking in.

 

I am definitely interested in any information you guys discover on the fuel pumps, especially stock fuel specs/flow rates. Also, does anyone know if there are any aftermarket fuel pump alternatives available yet for the Cayenne/Panamera 4.8L engines?

Jeff

 

I know this may not necessarily be entirely relevant to the current discussion, but bear with me for a minute and I think you might still find this information useful. While searching for more information of the manufacturer of the turbochargers of the new 3.0L V6 twin turbo Panamera/Macan engines I came across this thread on Car and Driver detailing some changes to the new 2014 Panamera Turbo S:

http://www.caranddriver.com/news/201...-and-info-news

In that thread it lists that one of the changes to power increasing from 550HP to 570HP was an increase in fuel pressure from 120 bar to 140 bar. So if that information is accurate at least we now know how much fuel pressure the shared 4.8L Twin Turbo motors are supposed to be running, a value you might be able to verify with the Durametric logs or maybe can probably even physically test Blackhorseturbo to ensure that your Cayenne Turbo is actually running correctly fuel wise.

Kent,

I thought you might be interested in this article, especially the mention of larger compressor wheels now in the turbos. While I can't verify anything yet if I had to guess I would say that it sounds like Porsche probably has decided to move to the 19T compressor now as the current stock setup versus the 18T, so there might be a new factory part number floating around somewhere you can find to source an upgrade.

Anyway, take care guys and good luck on the troubleshooting Blackhorseturbo!

Jeff