[Jeff@TopGearSolutions]

I have a couple question related to the tuning capabilities of Cobb on this specific car....

Can you control Vanos?

If so, can you change cam angles?

If so, are you finding more power in that area?

Can you change where vanos kicks in and is it beneficial as well?


Easier asked, is it just boost fuel and spark that this tune is focusing on or is there more? and can you tell us a little about it?
*****

In regards to any knowledge you have of piggybacks on this car specifically...

Do you know if load limits are holding the power potential of piggybacks back?


****

In regards to ignition timing....

How much timing are you seeing throughout the powerband generally?

***

Excuse me if I sound intrusive, just trying to get an idea of the tuning potential.

Thanks

[gidiup]

Originally Posted by muskamatt

+2

+3

[Bagelfast]

Originally Posted by JPSlick

I have a couple question related to the tuning capabilities of Cobb on this specific car....

Can you control Vanos?

If so, can you change cam angles?

If so, are you finding more power in that area?

Can you change where vanos kicks in and is it beneficial as well?


Easier asked, is it just boost fuel and spark that this tune is focusing on or is there more? and can you tell us a little about it?
*****

In regards to any knowledge you have of piggybacks on this car specifically...

Do you know if load limits are holding the power potential of piggybacks back?


****

In regards to ignition timing....

How much timing are you seeing throughout the powerband generally?

***

Excuse me if I sound intrusive, just trying to get an idea of the tuning potential.

Thanks

Great post. Looking forward to the answers!

[D.B.S]

Originally Posted by muskamatt

same, my Dad is waiting for an update. Very intrigued.

The 535 and X5 N55 both have the same programming as far as the ecu goes, but it's totally different than the programming of the N55 135/335. If it's going to be a while for them, then it's going to be an even longer wait time for us.

[serge086]

nice tune.

[Rob@Cobb]

Originally Posted by JPSlick

I have a couple question related to the tuning capabilities of Cobb on this specific car....

Can you control Vanos?

If so, can you change cam angles?

If so, are you finding more power in that area?

Yes. Yes, both exhaust and intake. And we are still playing with Vanos, but it's decently tuned from the factory.

Can you change where vanos kicks in and is it beneficial as well?

Vanos is always active leaving no on/off point.

Easier asked, is it just boost fuel and spark that this tune is focusing on or is there more? and can you tell us a little about it?

The basics are load, fuel, and timing...but there is far more in how this ECU operates. The 10 second skinny is that the ECUs use a torque/load targeting system. They calculate boost on the fly based on the current conditions of the air entering the motor.

*****

In regards to any knowledge you have of piggybacks on this car specifically...

Do you know if load limits are holding the power potential of piggybacks back?

I'm not really looking to sling mud, so i will choose to not comment.

****

In regards to ignition timing....

How much timing are you seeing throughout the powerband generally?

Really depends on the fuel being used, but somewhere in the range of -1 to 10 degrees across the rev range on stg 1.

***

Excuse me if I sound intrusive, just trying to get an idea of the tuning potential.

Thanks

No problem.

Originally Posted by BuraQ

When you use a ROM to flash / relfash you erase all history of what was previous.

There is however one concern though. What we need to know does the ECU show a "date stamp" of when the last software was flashed to match their data base records ?

Cobb Team ?

Terribly sorry. I thought we had answered this question. There is a date stamp, flash counter, etc. We do not touch those parameters, meaning they are never changed or incremented from what BMW last set them to. We leave no trace in the form of stamps, counters, or markers in the ROM once uninstalled.

Cheers,
Rob

[dmayhem]

It says up to 2010, but will this tune also work with the 2011 "is"? I've searched this thread and see this was asked a few times.

[Rob@Cobb]

Originally Posted by dmayhem

It says up to 2010, but will this tune also work with the 2011 "is"? I've searched this thread and see this was asked a few times.

I need to get a 'is' of some kind into the Austin facility for tuning. After that we can release support for the 'is' models.

Cheers,
Rob

[Jeff@TopGearSolutions]

Originally Posted by Rob@Cobb

Yes. Yes, both exhaust and intake. And we are still playing with Vanos, but it's decently tuned from the factory.


Vanos is always active leaving no on/off point.


The basics are load, fuel, and timing...but there is far more in how this ECU operates. The 10 second skinny is that the ECUs use a torque/load targeting system. They calculate boost on the fly based on the current conditions of the air entering the motor.


I'm not really looking to sling mud, so i will choose to not comment.


Really depends on the fuel being used, but somewhere in the range of -1 to 10 degrees across the rev range on stg 1.


No problem.

Thank you

PS you will have to excuse my vanos kicking on and off comment, I'm used to tuning Honda engines with Hondata

[dmayhem]

Originally Posted by Rob@Cobb

I need to get a 'is' of some kind into the Austin facility for tuning. After that we can release support for the 'is' models.

Cheers,
Rob

Awesome. Thanks for the quick reply. Too bad you're so far away or can you do it in the SoCal shop?

[blisstik]

Talk about pwnage.

Originally Posted by Rob@Cobb

Terribly sorry. I thought we had answered this question. There is a date stamp, flash counter, etc. We do not touch those parameters, meaning they are never changed or incremented from what BMW last set them to. We leave no trace in the form of stamps, counters, or markers in the ROM once uninstalled.

Cheers,
Rob

[shockin330i]

subscribing.

[Alan l.]

Over 21 Thousand views in only 4 days!

This has to be some bimmerpost record

Alan

[BrianMN]

Does anyone else think the dyno graphs provided by Cobb show the torque dropping off really early? That, or 380tq Is way high in the beginning? ? Doesn't 380tq and 313hp seem strangely far apart? Something just Doesnt seem "normal" with that much torque at 2500rs pm

Is anyone planning on actually tuning their car with this product at the moment? That's where this product *Should * shine...looking forward to results of that.

Could we also see some datalogs of the dyno pulls? My apologies if I missed them in the 20 pages..there weren't any attachments

[BQTuning]

Originally Posted by Rob@Cobb

Terribly sorry. I thought we had answered this question. There is a date stamp, flash counter, etc. We do not touch those parameters, meaning they are never changed or incremented from what BMW last set them to. We leave no trace in the form of stamps, counters, or markers in the ROM once uninstalled.

Cheers,
Rob

For clarification for everyone. If BMW installed their latest ROM on 08/9/2010, which is date stamped in ECU, and then we flashed the ECU with the AP on 01/23/2011 and then on 3/4/2011 we restore the OEM ROM. BMW will and only see the orignal date stamp that they did of the OEM ROM on 08/09/2011 and no other date stamp intervention from the AP ?

I just want this to be clear so the question is not repeated and is made a reference to in the future if brought up again,

[cyman83]

Originally Posted by BuraQ

For clarification for everyone. If BMW installed their latest ROM on 08/9/2010, which is date stamped in ECU, and then we flashed the ECU with the AP on 01/23/2011 and then on 3/4/2011 we restore the OEM ROM. BMW will and only see the orignal date stamp that they did of the OEM ROM on 08/09/2011 and no other date stamp intervention from the AP ?

I just want this to be clear so the question is not repeated and is made a reference to in the future if brought up again,

so can anyone tell me what is different from the 07 and 08 ecu?

[shockin330i]

Originally Posted by cyman83

so can anyone tell me what is different from the 07 and 08 ecu?

Its not so much the ecu but rather the obdII.

[atlharry]

Originally Posted by BrianMN

Does anyone else think the dyno graphs provided by Cobb show the torque dropping off really early? That, or 380tq Is way high in the beginning? ? Doesn't 380tq and 313hp seem strangely far apart? Something just Doesnt seem "normal" with that much torque at 2500rs pm

Is anyone planning on actually tuning their car with this product at the moment? That's where this product *Should * shine...looking forward to results of that.

Could we also see some datalogs of the dyno pulls? My apologies if I missed them in the 20 pages..there weren't any attachments

Just quoting Christian. for part of the explanation. -

Originally Posted by Christian.

This is a common occurrence on load-based chassis dynamometers. They employ vehicle loading techniques that more closely represent real-world loading conditions and impose additional loads as vehicle speed increases.

As a vehicle increases in speed, an increased aerodynamic force is imposed. A engine's output must exponentially increase in order to push through this increased aerodynamic resistance, and increase top speeds. I say exponential because you would need to increase power output exponentially to increase a vehicle's top speed once you hit the aerodynamic top speed barrier (no gearing limitations). A simple example: to increase top speed by 1 MPH it may take 1 HP, 2 MPH = 4 HP, 3 MPH = 9 HP...and so on.

On a load-based chassis dyno (as apposed to an inertial dyno), the dyno will continue to put additional load on the vehicle through the PAU (Power Absorption Unit) as vehicle speed increases. This is the most accurate means of putting a vehicle under real world street driving conditions where aerodynamic loads increase as vehicle speeds increase.

This is why you will see more of a taper on power output on load-based chassis dyno graphs. These dynos are more closely simulating real-world conditions.

Christian.

[muskamatt]

Originally Posted by Army335xi

The 535 and X5 N55 both have the same programming as far as the ecu goes, but it's totally different than the programming of the N55 135/335. If it's going to be a while for them, then it's going to be an even longer wait time for us.

thank you for this. i feel this has been an extremely productive and useful thread. Let's keep it that way!

[07_335i_AW]

I wonder how much longer it is gonna be before we seen street videos of this tune in action. I think a lot less questions would be asked if we get a good video comparison.

[Imperator]

Originally Posted by 07_335i_AW

I wonder how much longer it is gonna be before we seen street videos of this tune in action. I think a lot less questions would be asked if we get a good video comparison.

How would you see such a difference on a race video? There are too many factors independent of the tune to properly evaluate the differences. Dyno graphs, datalogs and feature lists are the best measuring sticks right now.

[07_335i_AW]

Originally Posted by Imperator

How would you see such a difference on a race video? There are too many factors independent of the tune to properly evaluate the differences. Dyno graphs, datalogs and feature lists are the best measuring sticks right now.

That I know. It would still be entertaining to see a run of some sort.