We finally got our PIWIS tool and were able to convert our 997tt to RWD to put on our Dynojet.

We're planning a series of upgrades for this car and wanted to get a baseline. Here it is...

We plan on doing our billet stock turbo upgrades exhaust and then take a look to see where the bottlenecks for power are.




-Martin Musial

 

Is this a '10 tt? A stock 997.1tt would not show 450rwhp.

 

I am interested in converting the 997.1 TT to rear wheel drive. Please email me for more information.

 

it's an '07 in RWD mode.
Our stock 996tt X50 car put down 435-440whp.
A stock 996 (non x50) K16 car made 380whp on our dyno for reference.
I'm sure in AWD we'd see another 5% loss (20-25whp).

-Martin

 

those are great WHP numbers and we know its a 997.1 long live the M64 Metzger!!

 

Most tt dyno's I have seen are on rear wheel only. But what you are saying is that a 480hp tt has less than 7% drive train loss on your dyno to 450, if it is stock, and that I have never seen.

 

I've seen quite a few 997TT's on the dyno with AWD still functioning, usually Mustang Dynos. Are you talking about 996's? Just curious...

 

what dyno's have you seen them on out of curiosity?

 

For reference, my stock 997tt put down 365awhp on an AWD mustang dyno. The car is a tiptronic (5 gears). I don't know if that's lower than normal stock 997tt's or if its about right? I know for a fact tip 997tt's are slower though...

 

On the contrary, Tiptronic 997TT's are actually faster then 6 speeds.

Porsche even rates the tip faster 0-60 by a couple tenths of a second.

Taken from a press release of the 2007 Turbo:

A 911 Turbo equipped with the optional 5-speed Tiptronic S automatic transmission requires only 3.4 seconds to sprint from 0 to 60 mph. Equipped with the standard six-speed manual transmission, the new 911 Turbo reaches the same 60 mph mark in 3.7 seconds. With either gearbox, the top track speed of the new 911 Turbo is 193 mph.

 

off the line its faster no doubt, but at higher speeds, the gearing ratio of the 6 speed comes in i've ran two other stock 997tts both 6 speed to 150mph and lost by 1 in a half car - 2 car lengths. its not much but still

either that or theres something wrong with my 997tt which i think there is after the dyno i did. number seems kind of low?

 

But if you gone above 150mph the tip would eliminate the difference because it has longer gears, +10mph at the redline.

 

Mine showed stock 407 on a dyno jet with the front axle disconnected. I have seen as high as 430s stock but 450 is very, that is just a 30hp loss through the drive train.

 

There have been dozens of threads in the past, vendors, tuners and enthusiasts alike making repetative arguments about what they see, what is a "correct" run, what a proper drivetrain loss should be. In the end, it is a useless argument. Just use the same dyno to test your improvements after each modification...that's what it is designed to do. As AMS has shown...this is their baseline. We will see how they do with their mods.

 

no question about what you are saying, you cannot compare one dyno run against a different dyno setup altogether and draw conclusions. All I was aasking as we all agree that a 997.1tt has about 480bhp to start with so a dyno run stock at the wheel showing 450 is very little drive train loss. And of course there is a wide range of drive train losses again also depending on the dyno with Mustang showing the biggest loss.