[Sleeper]

Topic being discussed in a FB group. Not sure if posted here yet, but I didn’t see it.

The chart is not for my car, and it’s not my FB post. I have no info on the parameters around the two plots (same/different cars, same/different etc), but it’s the first dyno comparison I’ve seen for the two G87 tunes.

If accurate, the power bump is real (as I think most of us not in denial expected). Will be interesting to see more feedback as the LCI’s are delivered.

[BroDoze]

Need more info. Worthless unless apples to apples.

[Sleeper]

Originally Posted by BroDoze

Need more info. Worthless unless apples to apples.

I’d say more data points.

[T-Rexx]

Is this a 24 then a 25 car back to back, as with the ICU being locked I didn’t think you could “flash” the 25 map as the FB post suggests.

[Sleeper]

Originally Posted by T-Rexx

Is this a 24 then a 25 car back to back, as with the ICU being locked I didn’t think you could “flash” the 25 map as the FB post suggests.

You can. There’s a thread on here discussing it. No FEMTO DME unlock required. BMW left a big loophole on this one, and I can’t imagine it was by accident. Possible upgrade (for $$$) coming down the pipe? Seems unlikely but you never know.

[Squidget]

I mean, did anyone ever think different? I thought we all assumed that it would just be a boost bump at the top end.

The logic being that the primary diff between the G8X and pre-MY25 G87 was that they slightly kneecapped the top end boost just to bring the peak numbers down at the very top.

And that's a cute way to make the numbers on paper seem smaller (and thus protect the G8x segment), but not really a big deal in real-world driving, and IMO unimportant if you are doing your own tunes anyway.

So I thought we all agreed that "the bump" was likely just the removal of the tuning kneecap they added in the first place. So, it's real, yes, but not all that important. Shrug? Did I misread the crowd, here?

[T-Rexx]

Originally Posted by Sleeper

You can. There’s a thread on here discussing it. No FEMTO DME unlock required. BMW left a big loophole on this one, and I can’t imagine it was by accident. Possible upgrade (for $$$) coming down the pipe? Seems unlikely but you never know.

Fair point, another desired product for BMW to take to market I guess.

[T-Rexx]

Originally Posted by Squidget

I mean, did anyone ever think different? I thought we all assumed that it would just be a boost bump at the top end.

The logic being that the primary diff between the G8X and pre-MY25 G87 was that they slightly kneecapped the top end boost just to bring the peak numbers down at the very top.

And that's a cute way to make the numbers on paper seem smaller (and thus protect the G8x segment), but not really a big deal in real-world driving, and IMO unimportant if you are doing your own tunes anyway.

So I thought we all agreed that "the bump" was likely just the removal of the tuning kneecap they added in the first place. So, it's real, yes, but not all that important. Shrug? Did I misread the crowd, here?

No I don’t think you misread the crowd as we have all had our “understanding” or “likely” scenario of where or how the power bump came from, but there has been nothing diffinative.

Common beliefs so far have been:
* there is no increased power, just more accurate numbers as apposed to the 23/24 being underrated.
* there is a real power increase but this is just the rev limiter being increased by 300rpm (same curve but more top end).
* there is a real power increase with a new map that is just not as de-tuned as 23/24 to keep a gap to the M3/4.
* and the most recent - according to 25 owners on this platform that have taken delivery, they say that the increase in power is definitely noticeable, so it may be not just in the top end.

Anyway, to summarise, popular opinion is now more inline with that there is a real power increase, but again, nothing definitive or where it is, or how it feels.

[TallGibbs]

Sleeper you beat me to it! I was going to post this today as well when I got to a real computer (on my phone now). I’m the one in FB commenting on how the ‘25 tube is actually lower torque before 3,500 RPM (approximately).

Agree with BroDoze more data would be nice. However, this is the first data I have seen attempting to compare the two tubes so it is nice to see something.

I want to do more research on if you can integrate the areas u see the curve to tell you something about power, but for now at least we see something to understand how , and where, the ‘25 tune differs from the ‘24.

[curtdragon]

Why'd they start the 25 car 2-300 rpm later?
If you step on it at 2200 rpm in a high gear you'll take longer to get full boost.
If it's the same car why didn't they start at the same time.

This is why I don't trust random dynos on the internet. Supposedly it's a 24 that was flashed to 25 tune. So of you're doing it back to back how to you not do these exact thing?

It's like one person starting 30 meters behind the line then only straying the race/clock when they cross the finish line

[RandomBro]

Originally Posted by curtdragon

Why'd they start the 25 car 2-300 rpm later?
If you step on it at 2200 rpm in a high gear you'll take longer to get full boost.
If it's the same car why didn't they start at the same time.

This is why I don't trust random dynos on the internet. Supposedly it's a 24 that was flashed to 25 tune. So of you're doing it back to back how to you not do these exact thing?

It's like one person starting 30 meters behind the line then only straying the race/clock when they cross the finish line

DING DING DING!!

The Dyno chart comparison has a variance of WHEN the pull/run started. You can clearly see they started LATER in the LCI pull.

Hell it would need to be same day, same car etc etc to be a true 1:1.

NOT apples to apples. But I'm assuming if they did it would be largely very similar. But that graph does not tell a true 1 to 1 story.

[BroDoze]

While I haven’t been able to pass 5k rpm yet, my car feels very strong all the way down low up to 4.5k rpm or so when I have to back off. Like REAL strong - stronger than any of my 7-8 ZF8 G87 test drives.
At 2,500rpm, that graph shows a massive loss in torque - I don’t feel that at all. My car pulls like a raped ape down low.

Need more data.

[RandomBro]

Originally Posted by BroDoze

While I haven’t been able to pass 5k rpm yet, my car feels very strong all the way down low up to 4.5k rpm or so when I have to back off. Like REAL strong - stronger than any of my 7-8 ZF8 G87 test drives.
At 2,500rpm, that graph shows a massive loss in torque - I don’t feel that at all. My car pulls like a raped ape down low.

Need more data.

Look at WHEN they STARTED the run in each case, the graph is BS.

[T-Rexx]

I am honestly surprised that there are no posts already on YouTube about this very question that so many people are curious about.

P.S it was my M2’s birthday yesterday!!! Production started on the 10/ 01/2024!!!
#prouddad

[Sleeper]

If the graph is at all accurate, we now know that it wasn’t just “BMW restating the same pre-‘25 numbers higher because we all know the figures are underrated” opinion that was floating around.

We also now know that there’s more torque and power everywhere in the LCI curve. The reason for the differences down low is when they started the pulls. After 4K RPM though, it’s relevant.

That’s about all that’s of value here. And that if you’re not running a piggyback, to get a coder to flash this for you ASAP as who knows how long it’ll be possible to do it!

[T-Rexx]

Originally Posted by BroDoze

While I haven’t been able to pass 5k rpm yet, my car feels very strong all the way down low up to 4.5k rpm or so when I have to back off. Like REAL strong - stronger than any of my 7-8 ZF8 G87 test drives.
At 2,500rpm, that graph shows a massive loss in torque - I don’t feel that at all. My car pulls like a raped ape down low.

Need more data.

Bro, now that you have your new car (congrats by the way) can you please put me out of my misery and answer a question that I am very curious about?

Now there is the new centre air vents in the dash that has a new ambient lighting strip, is there still the ambient lighting strip across the passenger side dash like the 23/24’s? Some say it’s gone.

[JMcLellan]

There is documentation from BMW explaining a more aggressive throttle mapping and an increase in peak horsepower. These changes would enable a better low end response and a little more zip up high.

My 2024 6mt is laggy under 3k RPM's in my opinion and I hope the 2025 tune cleans this up. I also read about the flash available for 23/24 cars to assume the 2025 ECU mapping. There are a couple places that will do it for around $200 to $300. However, a software update can wipe out the 2025 mapping. I am going the Racechip route and have one being delivered this week. I am hoping to wake up the low end a bit and get a little more top end power. Coming from a B58 I miss the low end grunt.

[RandomBro]

Originally Posted by JMcLellan

There is documentation from BMW explaining a more aggressive throttle mapping and an increase in peak horsepower. These changes would enable a better low end response and a little more zip up high.

My 2024 6mt is laggy under 3k RPM's in my opinion and I hope the 2025 tune cleans this up. I also read about the flash available for 23/24 cars to assume the 2025 ECU mapping. There are a couple places that will do it for around $200 to $300. However, a software update can wipe out the 2025 mapping. I am going the Racechip route and have one being delivered this week. I am hoping to wake up the low end a bit and get a little more top end power. Coming from a B58 I miss the low end grunt.

Please do provide a review from a 6MT perspective l. I'm also debating if I wanna go the JB4/RC route vs. 2025 update to solve for low end issue on my 6MT

[JMcLellan]

Originally Posted by RandomBro

Please do provide a review from a 6MT perspective l. I'm also debating if I wanna go the JB4/RC route vs. 2025 update to solve for low end issue on my 6MT

I will provide feedback but it might not be until spring. I haven't decided if I want to install now or next year. If the temps stay high and I can count on warm tires then it will be a go. Otherwise it will be wheelspin central.

[mateusbelone]

Hey guys, if anyone here wants to check the logs before and after the new mapping I can share. Ask me in PM

We are planning to make a youtube video soon, as it left many doubts remaining from owners.

Feel free to PM me

[TallGibbs]

mateusbelone PM sent but not sure if you can receive them if you are new. You can message me on FB (I commented on your FB post asking about the lower torque before 3,500rpm)

[BroDoze]

Originally Posted by T-Rexx

Bro, now that you have your new car (congrats by the way) can you please put me out of my misery and answer a question that I am very curious about?

Now there is the new centre air vents in the dash that has a new ambient lighting strip, is there still the ambient lighting strip across the passenger side dash like the 23/24’s? Some say it’s gone.

Thanks! So the cars in PPF jail. I did get 1 chance to try to mess around with the ambient lighting. I’m not sure what to compare it to, but I don’t remember seeing any lighting on the passenger side, except for the footwell. I’ll be able to experiment more next week. Maybe this is good since I don’t know what I’m missing?