[X5 45e]

Originally Posted by perikifi

How could you tell?

My other guess would be have been a highschool teacher in physics ( that married a rich wife)

[X5 45e]

Originally Posted by perikifi

My thoughts exactly. My understanding is that when preconditioning, the batteries and cabin will be warmed up but not the ICE. If electronics does not think ICE needs warming up, I will do that myself even if it wastes a few centiliters of gas. I actually have Sport individual set up in all comfort settings for this exact reason so that I'll have engine running, RPM displayed and comfortable driving. For sporty driving, I use Sport standard. Now that I think about it, it may be that the M/S gear selector position achieves the same goals even easier.

I think it would indeed. If you put it in S the ICE will start. You can even turn the ICE on by using the levers on your steering wheel an gear up or down.

[Heavyd]

Originally Posted by perikifi

Yes, it doubles the consumption on this particular route, and for that you get the free electric kilometers. Ideally, with consumption doubling, you would get the same amount of eDrive kilometers as you drove ICE. In my test it was about 75 % e-km that you get in reality.

There are a number of laws of physics that insist on nobody getting a completely free lunch, or ride in this case A number of extra hp/kW are required for charging. My guess (based on an understanding of said laws) is that the increase in consumption for charging is +8 l/100km. It doubled only because my base consumption happened to also be 8 liters.

While I'm at it: the energy content of a liter of gas is around 9 kWh. During 60 km the additional consumption of 8 l/100km resulted in about 5 liters of extra gas burnt, producing 45 kWh of torque and heat. Since I managed to charge 70 % of 21 kWh, or 15 kWh, the (marginal) efficiency of the ICE would be 33 %, which is good, as the overall efficiency of an ICE should be between 20 and 35 %.

Chiptuning the ICE with more HP and torque will that result in faster charging with lower consumption?

[X5 45e]

Originally Posted by Heavyd

Chiptuning the ICE with more HP and torque will that result in faster charging with lower consumption?

If you drive the same speed it should? But maybe perikifi could comment on this one? Better energy mangement so better efficiency?

[perikifi]

Originally Posted by X5 45e

If you drive the same speed it should? But maybe perikifi could comment on this one? Better energy mangement so better efficiency?

Now you're asking a software engineer with zero tuning experience but let's give it a shot

The focus of tuning is increasing maximum torque levels at different RPM. It won't (materially) change the amount gasoline required to create some level of kW to be split between maintaining forward motion and charging battery.

More torque only comes through burning more gasoline. Engine efficiency won't be improved much, although some tuners seem to advertise a decrease in gas consumption.

[X5 45e]

Thanks for the answer. I think the same. And I am not going to tune my engine anyway. Think it's looking for trouble in an PHEV. But opinions may be different of course!

[JanR]

I won’t recommend chiptuning. It’s for sure that it will work, BUT, most tuners give garanti on the tuning, some of them on the engine, but non of them on the gearbox.
A few years ago on my Audi A7, the gearbox was broken, 6 months after tuning. 15.000€ for a new gearbox, without intervention of tuner or Audi.

Think twice pls

[Pateeke81]

Originally Posted by JanR

I won’t recommend chiptuning. It’s for sure that it will work, BUT, most tuners give garanti on the tuning, some of them on the engine, but non of them on the gearbox.
A few years ago on my Audi A7, the gearbox was broken, 6 months after tuning. 15.000€ for a new gearbox, without intervention of tuner or Audi.

Think twice pls

Out of experience (not mine but have been in the sector) I can tell you that the "warranty" tuners give on the engine is an empty box.
They will only fulfill the warranty on the engine if you can prove that the engine problem is a direct result of the tuning, something that is impossible to prove unless you let an external party disassemble the engine prior to tuning to independently prove that it is a perfect condition, otherwise they will always claim the engine had a pre-existing issue.

Same thing for their claim that they develop all software in house which is also a flagrant lie, that would require every car they can tune to have been on their dyno. They buy base maps that they play with while on the dyno, they can build up boost at a lower or later rpm to the customer's needs and that's about all they do.

[W0ut]

Originally Posted by JanR

I won’t recommend chiptuning. It’s for sure that it will work, BUT, most tuners give garanti on the tuning, some of them on the engine, but non of them on the gearbox.
A few years ago on my Audi A7, the gearbox was broken, 6 months after tuning. 15.000€ for a new gearbox, without intervention of tuner or Audi.

Think twice pls

There is a video of of a guy selecting a wrong gear in his tuned M2. Turns out that part of the gain in his tune was achieved by turning off certain safety mechanisms. One wrong shift and his engine was ruined beyond repair.

https://www.bmwblog.com/2020/02/16/v...to-wrong-gear/

[Chrudosh]

Anyone chipped an X5 45e yet?
Looking forward to read about 0-100, 100-200 and topspeed results

[Heavyd]

Originally Posted by Chrudosh

Anyone chipped an X5 45e yet?
Looking forward to read about 0-100, 100-200 and topspeed results

No was planning to do it but I doubt it I will do it.
Too many issues and software updates, OTA updates will overwrite it and I drive 95% of the time electric as an old fart with the 45e.
Hybrid cars are a killer for sporty driving style It completely changed my way of driving.

Also the latest ISTA software automatically searches for tuning and flag the car.

[jad03060]

With the load, the drag, and the speed of the vehicle, the engine will require a certain amount of energy to drive a steady speed. Apply more energy, you'll go faster, or, if you then try to recharge the batteries, that energy goes there. At a particular energy output you'll be going a particular speed. A higher powered engine can likely pull a higher gear, so may reach top gear faster. That should save fuel versus a lower powered engine that may need to run in a lower gear or take longer to achieve that steady state.

The electric motor on the 45e can run the vehicle at up to about 120-130Km/h on level roads without the ICE running.

The i3 has functionally two of the ac-dc conversion units, so has double the charging rate capacity of the 45e. When charging from the EVSE, the conversion is limited by the KLE module. When regeneration is occuring, the EME module is doing the conversion. Since the EME must be able to process the entire power the motor can handle, that power handling capacity is much larger, and eclipses the conversion the KLE can handle, which, I think is why regen and battery maintenance while driving with the ICE using the motor as a generator have significantly different charging rates.

The X5 is already heavy, and space for both the ICE and EV bits takes up a lot of space...I'm sure they could have probably shoehorned in a second module, but at what cost in both functionality and convenience? That would also increase the need for cooling, which makes for more weight, which also affects performance and range. Everything's a tradeoff.

[GrussGott]

Originally Posted by Chrudosh

Anyone chipped an X5 45e yet?
Looking forward to read about 0-100, 100-200 and topspeed results

Assuming you don't have warranty concerns overall, I'd be doubly warranty concerned with a 45e ... not sure how the electronics would look at extra power and/or what they're expecting and that seems like complicated stuff to be screwing with. That said, there's a video out there (youtube) of a chipped 45e but don't have it handy.

Whether ISTA can flag a tune or not, at least here in the US, BMWNA can deny you warranty work any time for any reason so I wouldn't even want to risk it, especially given it's a new US model, the stop-sale, recalls, etc.

I'd hate to get turned down for a recalled replacement battery because BMWNA suspected I'd modded ...

[biterror]

Originally Posted by GrussGott

Assuming you don't have warranty concerns overall, I'd be doubly warranty concerned with a 45e ... not sure how the electronics would look at extra power and/or what they're expecting and that seems like complicated stuff to be screwing with.

I don't think the electronics (other than the engine control unit, perhaps) knows about the extra power from the ICE - it goes to the wheels :-) The transmission (mechanics) will see the increased power, however.

[GrussGott]

Originally Posted by biterror

I don't think the electronics (other than the engine control unit, perhaps) knows about the extra power from the ICE - it goes to the wheels :-) The transmission (mechanics) will see the increased power, however.

Of course the problem there are the words "I don't think ..."

That said, here's the video I was too lazy to find yesterday:

Overall my point is beyond the normal tuning warranty risks, if there's, say, a battery recall and BMWNA (in the US) thinks you've modded, can they refuse to replace the battery? Could be edge case stuff, could be a real risk

[biterror]

Originally Posted by GrussGott

Of course the problem there are the words "I don't think ..."

I mean, if the electric motor in the gearbox can operate as a, say, 20 kW generator to charge the HV battery, it doesn't really care about the ICE power output as long as it's greater than 20 kW + the generator losses. Any excess power goes to the wheels. Even if the ICE was outputting 1000 kW, the generator would still output 20 kW to the battery.

Think about that 60 W bulb in your room, it's still only 60 W even though the power plant produces several gigawatts.. :-)

I would only worry about the gearbox, xdrive, drive shafts etc. if I had >500 hp on a 45e.

[X5 45e]

Originally Posted by biterror

I mean, if the electric motor in the gearbox can operate as a, say, 20 kW generator to charge the HV battery, it doesn't really care about the ICE power output as long as it's greater than 20 kW + the generator losses. Any excess power goes to the wheels. Even if the ICE was outputting 1000 kW, the generator would still output 20 kW to the battery.

Think about that 60 W bulb in your room, it's still only 60 W even though the power plant produces several gigawatts.. :-)

I would only worry about the gearbox, xdrive, drive shafts etc. if I had >500 hp on a 45e.

I would stay away from engine tuning now that BMW PHEV are catching fire. Maybe it doesn't affect it, I don't know. Better be safe than sorry.

On the positive side. The car will be so heavily burned down that they won't find any traces of tuning anyway. Unless driving data is transferred to a cloud.

[Heavyd]

And Belgium wants from 2026 every company car fully electric, zero emission. Hope they invest in fire fighters

We have crappy infrastructure, the nuclear plants are being shut down, every winter there is panic if there will be enough electricity,
But hey they want everyone riding electric

[mrracer]

Originally Posted by perikifi

It's been +3 to -3 degrees C so not really winter this year so far in the South of Finland. I am pretty sure that no ICE has been involved in Electric and temp remains at minimum. I am also a bit worried about what happens at -20 deg, both with battery capacity availability and sudden usage of ICE.

+3 to -3 degrees C, not really winter? For our winters we get two to three days just above 0C, I think we hit around -3C once.

[W0ut]

Originally Posted by Heavyd

And Belgium wants from 2026 every company car fully electric, zero emission. Hope they invest in fire fighters

We have crappy infrastructure, the nuclear plants are being shut down, every winter there is panic if there will be enough electricity,
But hey they want everyone riding electric

I have colleague living in Antwerp (I believe Berchem) that can not upgrade his home electric connection because the cables in the street can not handle it :-). He is stuck to 'mono-fase' 20A. Maximum charging 3.7kW.

[MaxRiver]

Originally Posted by mrracer

+3 to -3 degrees C, not really winter? For our winters we get two to three days just above 0C, I think we hit around -3C once.

Haha! Here we have probably the same as Finland, -3C is not winter yet, it's fall.

[ela321]

will there be a plug and play like system (racechip) for 45e?