60-130

 

Your car is way fast !
Deserve all the best bro

 

Hi Speeders, today by 5,5°C AT and 1,70Bar peak boost.
I had to warm the tires which were still spinning a little, I did 2 runs with the same results.
The card was in the vbox, if the run is well in I send it to the 996´s 60-130 thread.

 

That is super quick, congrats..

Is this on pump fuel?

 

Thank you, I'm happy to break the 4' barrier!

I run E85 (which is truly E65 those days)

 

Graphs, 100-200 was 3.92' and 60-130 was 4.53'

 

60-130

 

Following the sent of the dbn file to the 60-130 section member Pencilgeek offered me to calculate the power from the vbox file.
He guided me to the vboxtool which is truly amazing. (Vboxdyno.com)
I didn't dynoed the car since swapped from the 66mm VTG turbos ( it did 670hp/900Nm at this time) so I had not real idea of the actual power.
The tool asked me for my weight, the AT, the wind, etc... to complete the dbn file and after some work on the variables I recevied a dynosheet "power vs rpm".
It showed a 1006whp peak and after a curve smoothing still 960whp/837lbs/ft!
I'm very pleased with the result and thank especially PGeek for his job!
Cheers,
P.

 

Here is the dynosheet, nice area under the curve isn't it?

 

Congrats! I guess your calculations are quite right as my GT-R shows now near the same times as yours
100-200 3.86s
60-130 4.48s
100-150 4.45s
Weight is 1850-1870Kg including me

The vboxdyno showed like 969whp as the highest power (uncorrected), on a superflow800 dyno I did 993whp and 1111hp crank, torque was 1157Nm or so, so quite the same figures as your car. My runs for 100-200, 60-130 had 2 shifts, your car seems faster as you initiated in 4th gear, wow ! Also my boost was 31-32psi, pump94+100%meth 14C weather.

 

Wow it has really good area under the curve, its got to be a blast to drive even partial throttle with that tq down low

 

[QUOTE=IMI A;4602351]Hi K24.
-Hi Imi,

Amazing numbers from relatively small turbos.
-100% agree

Are you still running full traction control etc? Does the gearbox not need to be beefed up now too? Also do you have a LSD?
-Full traction control etc, gearbox been revised with oem parts but optimised clearances, I will probably need some Bill Rader stuff soon, I hope the 997 gearbox developpement will be fine this day.
No LSD (nor any drug lol)

This is the set up I'm thinking about next but in the real world is it a handful to use on our typical European wet and leafy roads. Is over taking on a typical B road at 30-50mph in third or fourth gear as easy as it was when you had the hybrid 670 bhp VTG set up?
-I would say it is amazing on clean and dry roads but pretty hairy on cold roads, even dry. The car can pull you 1,2G at a rolling start in 2nd, it is the high value a 991TTS achieves at its launch control...
Overtaking in 3 or 4rth on B-roads is a bit scary because the megatorque exceeds the grip extremely easily when the 4 wheels are not straight even traction control ON.
The car pulls far stronger vs vtgs even <4000rpm and overall the power delivery is pretty brutal when the vtgs were pretty smooth.

What in your view is the sweet spot?
-Dry and clean roads about 15-25°C AT, my pleasure is the 80-250kph speeds and, but, GB to France is not very far, we can arrange a test one next day?

 

Just wondering how you feel about the turbos a year later?

 

Hi Rob,

The turbos still work perfectly.
We noticed the boost was slighly lowering above 6000rpm so we mapped a 1psi ramp up from 6000 to redline, boost does not really raise now but stays steady @1,65Bar and the feeling at top end is better.

I also broke the 997 gearbox a second time and bolt a 996TT built gearbox with straight cut 3-4-5 and 6th gears (with GT2 shaft and first gears, etc...) plus a chromoly LSD from Guard. (Bought from a 6spd member in LA)


The car is extremely fast for open roads (kills SV1000RR, Panigale, ZX10, etc... From a 80kph rolling start) and needs a huge involvement from the driver.
I love it and hope it will last!