2871R goes rather nicely...

[A80Avant]

On the other hand 360hp from g-tech is not 430hp crank,but anyway Torgue again is measured without losses

[S2central.net]

Well I just did the nominal 15% drivetrain losses on that 367bhp to arrive at ~430bhp. For crappy 95RON fuel I think the result is pretty good at the wheels ...

With more time and emptier roads I'm sure we could get some better power runs in 4th.

We'll maybe get a dyno day setup over here soon and then we'll see what its doing on the rollers.

[EspenW]

Well I just did the nominal 15% drivetrain losses on that 367bhp to arrive at ~430bhp. For crappy 95RON fuel I think the result is pretty good at the wheels ...
.

What was the temp, barometric pressure and elevation?

[Sonic]

A very compelling argument against the RS2 turbo.

[Ross]

There is still hope for Project: 400 then :mischeif:

Paul, will this be an off-the-shelf fry-up when it's done or will you require live mapping for more GT3071R setups? I appreciate with this level of customisation different exhaust, IC setups etc could be an issue on a generic chip!

[S2central.net]

What was the temp, barometric pressure and elevation?

Good questions Espen... I'd appreciate your thoughts on guestimating flywheel power on this puppy. The weight is correct from commercial weighbridge.

Air Temp was about 5 celsius
Elevation is as good as sea-level as makes no difference
Ambient pressure was 1012mbar


Paul

[S2central.net]

There is still hope for Project: 400 then :mischeif:

Paul, will this be an off-the-shelf fry-up when it's done or will you require live mapping for more GT3071R setups? I appreciate with this level of customisation different exhaust, IC setups etc could be an issue on a generic chip!

I'm hopeful of making this and a 3071 setup sufficiently generic, but the only way to know that things are healthy is with an AFR (WB-O2) gauge...

Will keep you posted

[A80Avant]

if you can give me speed vs time i can get you a decend flywheel power. The new excel with Andy's help is much more efficient

[S2central.net]

Speed vs Time is plotted of page 4 of that PDF.

[S2central.net]

Can you or Andy share that spreadsheet when it is somewhat user friendly please ?

[A80Avant]

yes sure.
it is just an update i made late last night using info from both Andys and my friends excel.I will post it when i get back from work this afternoon

it is not easy from the pdf to get the data.

does the g-tech has an export function to excel or something?

[Rusty]

Can you or Andy share that spreadsheet when it is somewhat user friendly please ?

I've just been doing it from scratch. I could come up with something that you put the data in a ceratin format into and then it gives you the graph. The main problem with all of this is that the acceleration data is all over the place and so needs to be averaged over about 0.8 to 1s and even then you have to manually address some of the data points. Strange really as the speed data is lovely and smooth. The trick is to be able to manipulate the data from raw to useable in one go.

I'll come up with something that takes the speed in m/s and data such as

Logging frequency = 1Hz, 5Hz, 10Hz
Drivetrain losses = fly = 1.35 wheels @ 7000rpm
Gear speed = 2nd = 65 @ 7400rpm, 3rd = 95 @7400rpm
Weight, Coupe + 1 person = 1650-1700kg
Cd = 0.32
A = 2m^2
Rho, air = 1.25kg/m^3

and calculates the power curve.

The acceleration data will be plotted so you just manipulate the graph to clear any hot spots.

[Rusty]

Paul, if you've got a .csv output from the GTech then I'd be interested to have a look and see what the acceleration data is like compared to the mess that the GPS systems chuck out. They're fine for say a 1Hz calculation of acceleration but for real time 5Hz/10Hz they're bloomin' awful.

[S2central.net]

yes sure.
it is just an update i made late last night using info from both Andys and my friends excel.I will post it when i get back from work this afternoon

it is not easy from the pdf to get the data.

does the g-tech has an export function to excel or something?

As Barak Obama would say - yes we can

CSV dump of that run direct from Gtech software. Cool or what ?

Be really interested to see how you & Andy's calcs crunch that data...

[S2central.net]

Spooky... I was doing the CSV dump before I saw Andys post.........