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      06-15-2016, 09:36 AM   #1
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BMW i8 - ECU tune by BR-Performance

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BMW i8 with a stage 1 aka "safe" tune. The DME had to be pulled.

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      06-15-2016, 01:26 PM   #2
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Pricing and details on the process?
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      06-15-2016, 02:21 PM   #3
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those are serious numbers
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      06-15-2016, 02:34 PM   #4
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Looks like it is 890 euros.

http://www.br-performance.be/en-be/c...0-all/8471-i8/
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      06-15-2016, 02:39 PM   #5
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Quote:
Originally Posted by jcpca356
those are serious numbers
I know right. And to think there's an additional 40hp sleeping in the electric engine that can be safely woken up with a bit of computer wizardry.
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      06-15-2016, 03:04 PM   #6
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Yes, it has some more potential. But we Europeans prefer a safe(r) tune We have tuned the combustion engine and 'patched' the electric motor to have some more torque. Price is 890?, 4h job. Same ecu as the 3cyl from BMW/Mini. Just harder To reach!
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      06-15-2016, 03:23 PM   #7
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I assume this breaks the warranty, right?
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      06-15-2016, 04:55 PM   #8
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And how do we Americans get access to this tune, and what happens when the engine blows up.....what do you mean by safer tune, what the tolerance level we are talking about?
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      06-15-2016, 05:00 PM   #9
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Quote:
Originally Posted by Arobotbrain
I assume this breaks the warranty, right?
Not necessarily.
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      06-15-2016, 10:43 PM   #10
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in for more infos
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      06-16-2016, 03:13 AM   #11
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I have a feeling the electric upgrade is useless. The stock engine has too much power already. I actually have to go light on the 'gas' when I'm in electric only mode. With more power coming from the rear wheels, it's going to be even less effective.
Maybe it will help with top speed.
I'm wondering if a tighter suspension would help keep the front wheels down.
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      06-16-2016, 03:30 AM   #12
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Quote:
Originally Posted by Arobotbrain View Post
I assume this breaks the warranty, right?
well, we noticed that petrol cars @ bmw don't break warranty so easily.
My M4 is tuned as well and went in for warranty works, they haven't noticed anything...

Quote:
Originally Posted by ChiTownM View Post
And how do we Americans get access to this tune, and what happens when the engine blows up.....what do you mean by safer tune, what the tolerance level we are talking about?
same way all American tuners got their access to all FXX tuning pm for more info


Quote:
Originally Posted by hytek View Post
I have a feeling the electric upgrade is useless. The stock engine has too much power already. I actually have to go light on the 'gas' when I'm in electric only mode. With more power coming from the rear wheels, it's going to be even less effective.
Maybe it will help with top speed.
I'm wondering if a tighter suspension would help keep the front wheels down.
I am not sure what car you drove, but there is room for more...
Ok, ours had different suspension, but I do not believe the i8 is overpowered
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      06-16-2016, 04:38 AM   #13
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Quote:
Originally Posted by EndBosS View Post
I am not sure what car you drove, but there is room for more...
Ok, ours had different suspension, but I do not believe the i8 is overpowered
I'm hoping you're right and I'm wrong, because more usable power would obviously be cool. On the stock i8, if I put my i8 on e-drive and floored it, the front wheels would spin and traction control would cut in, etc. So, I don't see how adding more power would help with the traction. Obviously, the story would be different if the power was delivered to the rear wheels; the downward pressure generated would help with increasing power output.

Could you run an experiment on the upgraded i8 and see if you can get a better 0-60 than a stock i8 while only on e-drive? If you succeed, I want to know why. Was it because of improved suspension?

PS: I'm actually not an expert in this area. So, feel free to correct me if I'm incorrect about how I understand things.
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      06-16-2016, 04:41 AM   #14
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Quote:
Originally Posted by hytek View Post
I'm hoping you're right and I'm wrong, because more usable power would obviously be cool. On the stock i8, if I put my i8 on e-drive and floored it, the front wheels would spin and traction control would cut in, etc. So, I don't see how adding more power would help with the traction. Obviously, the story would be different if the power was delivered to the rear wheels; the downward pressure generated would help with increasing power output.

Could you run an experiment on the upgraded i8 and see if you can get a better 0-60 than a stock i8 while only on e-drive? If you succeed, I want to know why. Was it because of improved suspension?

PS: I'm actually not an expert in this area. So, feel free to correct me if I'm incorrect about how I understand things.
next time we tune one, I'll record it!
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      06-16-2016, 05:46 PM   #15
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Nice work

Interested to see how this develops, and performs on the road.
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      06-16-2016, 06:04 PM   #16
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Does this tune blow the warranty?

I suspect the answer to the question requires both engineering and legal knowledge. I have the latter but not the former. Anyone venturing an opinion without both may tread where no man dare. So I will:

If the engines have been stressed beyond their factory-set tolerances, and one of them fails, I'm pretty sure BMW will try to find out why. So, unless the i8 is quickly detuned before BMW comes on the scene, I'd say the warranty is toast.

(I base this opinion on the fact that when my portable charger plug got stuck, BMW sent factory people out and studied the problem at my dealership. They were intensely interested in knowing why the plug assembly failed. And they took apart the car underneath and replaced a controller embedded in the batteries.)
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      06-17-2016, 12:28 AM   #17
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Quote:
Originally Posted by MalibuBimmer View Post

If the engines have been stressed beyond their factory-set tolerances, and one of them fails, I'm pretty sure BMW will try to find out why. So, unless the i8 is quickly detuned before BMW comes on the scene, I'd say the warranty is toast.
)
Quote from these guys' website regarding the i8 "stage 1" tune: "Stage 1 consists of an individual reprogramming of the engine management system of the vehicle, whereby the adjustment of the engine parameters (ignition, injection, ...) is customly done on the dyno. All values of the motor parameters at this stage remain within the safety standards prescribed by the manufacturer. This stage 1 is 100% reliable, in short, more driving pleasure without worries!"

So, nothing seems to get stretched beyond OEM limits.
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      06-17-2016, 08:49 AM   #18
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that's why I called it a stage 1 tune, here in europe that means it's a 'safe' tune.
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      06-17-2016, 10:09 AM   #19
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Quote:
Originally Posted by Aye-eight View Post
Quote from these guys' website regarding the i8 "stage 1" tune: "Stage 1 consists of an individual reprogramming of the engine management system of the vehicle, whereby the adjustment of the engine parameters (ignition, injection, ...) is customly done on the dyno. All values of the motor parameters at this stage remain within the safety standards prescribed by the manufacturer. This stage 1 is 100% reliable, in short, more driving pleasure without worries!"

So, nothing seems to get stretched beyond OEM limits.
Of course, the tuners have an interest in conveying that infiormation.
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      06-17-2016, 11:10 AM   #20
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Quote:
Originally Posted by hytek View Post
I have a feeling the electric upgrade is useless. The stock engine has too much power already. I actually have to go light on the 'gas' when I'm in electric only mode. With more power coming from the rear wheels, it's going to be even less effective.
Maybe it will help with top speed.
I'm wondering if a tighter suspension would help keep the front wheels down.
That may be the case for takeoff from standstill, accelerating out of tight turns, or in the rain. But as soon as the car has forward momentum with no hard directional changes, front-end grip is no problem at all. So, more power from the e-motor would further improve passing power, for instance.

I'm wondering if a rigged e-motor would also have increased regen. Any electrical engineers out there?

Someone would really need to know what they're doing, though. Wouldn't want to start a fire because too much current is drawn through the wires.
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      06-17-2016, 12:02 PM   #21
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Quote:
Originally Posted by Aye-eight View Post
That may be the case for takeoff from standstill, accelerating out of tight turns, or in the rain. But as soon as the car has forward momentum with no hard directional changes, front-end grip is no problem at all. So, more power from the e-motor would further improve passing power, for instance.

I'm wondering if a rigged e-motor would also have increased regen. Any electrical engineers out there?

Someone would really need to know what they're doing, though. Wouldn't want to start a fire because too much current is drawn through the wires.
This makes total sense. I didn't think of the passing power situation.
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      06-17-2016, 03:48 PM   #22
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Quote:
Originally Posted by MalibuBimmer View Post
Of course, the tuners have an interest in conveying that infiormation.
Admittedly, they do. But then again, no OEM pushes their hardware even close to the theoretical limits. Because there's too many people (and their lawyers) out there that do unpredictable things. So, there's plenty of safety margins in everything. Just like in that elevator that says 8 people max. but could take the weight of at least 16.

As a supplier or aftermarket provider, you can obtain some of the specs of what the OEM still considers safe. Especially, if the same engine or component is used in another series production vehicle to higher specs. Like that e-motor in the i3.

The American aftermarket industry has been living off this fact for decades. That's how you can easily buy a Chevrolet crate motor with 572 ci (based on a stock 454) that puts out 1000 hp. All warranties are off at that point, of course. ;-)
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