G-Power F10 M5 Bi-Tronik III - Page 2 - BMW M5 Forum and M6 Forums
F10 M5 Discussion 2010- Discussion about the next upcoming generation M5 based on the next generation 5-series, the F10.

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post #11 of 18 Old 2nd March 2012, 06:09 PM
VacMan
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Quote:
Originally Posted by amc View Post
From the press release: "The basis for the electronic output increase is the fact that G-POWER, in contrast to the manufacturer, does not use standard software full of compromises but an individual solution for the engine. Among others, the parameters for the amount of fuel and the ignition timing are modified depending on the product variance of the engine. "

And they tell you that you just send in your ECU? But according to the press release they modify according to the product variance of the engine? Yes, veery convincing

All I can say is, if you consider ordering, have them explain to you how they modify the ECU software according to the product variance of your engine if they get the ECU, but not the car.
I think you're reading that wrong. I read it as "this isn't a canned oem tune done with performance compromises but one specific to getting more output from the f10 M5 motor. "

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post #12 of 18 Old 2nd March 2012, 06:44 PM
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Quote:
Originally Posted by amc View Post
From the press release: "The basis for the electronic output increase is the fact that G-POWER, in contrast to the manufacturer, does not use standard software full of compromises but an individual solution for the engine. Among others, the parameters for the amount of fuel and the ignition timing are modified depending on the product variance of the engine. "

And they tell you that you just send in your ECU? But according to the press release they modify according to the product variance of the engine? Yes, veery convincing

All I can say is, if you consider ordering, have them explain to you how they modify the ECU software according to the product variance of your engine if they get the ECU, but not the car.
Actually, the ECU monitors pretty much every engine parameter, and I'm sure there are slight differences from engine to engine in some of the values. They don't need your actual engine to reprogram the ECU to respond to a specific engine parameter. For example they might change the fuel delivery based on the specific cylinder compression readings if they can monitor that...

What I don't give them a break on is figuring out how to modify the tranny to accept more than the 700Nm limit when the BMW engineers couldn't figure out how to do that and keep their required reliability. If the aftermarket guys don't have to meet certain specifications, then they can do things the OEM engineers can't. But they aren't better engineers than the people they have at BMW, that's for sure.

In this case, I can guarantee that the specification they don't meet is long-term reliability of the gearbox.

Mike

Last edited by Wolverine; 2nd March 2012 at 06:44 PM.
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post #13 of 18 Old 2nd March 2012, 10:14 PM
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Quote:
Originally Posted by Wolverine View Post
Actually, the ECU monitors pretty much every engine parameter, and I'm sure there are slight differences from engine to engine in some of the values. They don't need your actual engine to reprogram the ECU to respond to a specific engine parameter. For example they might change the fuel delivery based on the specific cylinder compression readings if they can monitor that...
Possible, but I don't believe that. If the ECU has enough cpu power to do that in realtime, then I'm pretty sure BMW already does it, if only to optimize fuel consumption. The next thing is that they don't address the impact on cooling at all.

Let's get real here: the first tuners have their cars since when? And we're supposed to believe they have developed way more complicated ECU software for this engine than BMW did and throughly tested impact on powertrain and cooling?
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post #14 of 18 Old 12th March 2012, 04:24 PM
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I spoke to G-Power on pricing and availability for this upgrade:

G-POWER Bi-Tronik III electronic output increase
Basis: M5 F10 factory output 560 hp (412 kW) output increase approx. 80 hp (59 kW);
max. torque approx. 777 Nm; max. top speed approx. 315 Km/h


PRICING: 5,200.00 Euros + shipping to Germany (for ECU) which is about 150.00 Euros.

There also is a 24 month warranty offered on the vehicle for an additional 560.00 Euros.

G-POWER warranty package – engine and transmission
The warranty package covers the standard components according to the G-POWER warranty terms for a
period of 24 months. Requirements for the G-POWER warranty package:
- The automobile in question is not older than 3 years at the time of the modification
- The mileage of the automobile in question is less than 60.000 km at the time of the modification


Hope this helps!

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post #15 of 18 Old 12th March 2012, 07:25 PM
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Quote:
Originally Posted by areout View Post
"Software tune ups boost while managing fuel and ignition parameters, as well as managing torque figures during the shifting process for reduced stress on transmission."

I don't understand this really, does this means shifting is actually slower?!
I suspect it'll be a tweaking of the factory shift strategies to account for the increased power. Most DCT/Autos have some form of shift torque cut/reduction out of the box - be it via ignition cut or ignition retard - in order to reduce transmission shock, doesn't necessarily mean it will affect shift times.
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post #16 of 18 Old 12th March 2012, 07:44 PM
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post #17 of 18 Old 12th March 2012, 07:56 PM
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Quote:
Originally Posted by areout View Post
why wouldn't factory do it then and increase boost/torque/power?!
Shift torque reduction is something that is already implemented by OEM's. There are many reasons why BMW chose to stick to the power level they did for their product: MPG, emissions, long term reliability, cost...it's endless, but that doesn't stop you making use of the headroom BMW built in for reliability to release a bit of power.
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post #18 of 18 Old 16th March 2012, 05:15 AM
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