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      04-26-2026, 02:37 PM   #45
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Quote:
Originally Posted by BMWTennis View Post
Don't tell that to baron95 -- he'll think he has a $700k 3.0CSL with that tune
Don't be silly. The 3.0 CSL is a cartoonish, boy-racer-wanna-be, joke to be kept in a glass display.

That tune applied to a regular M2/3/4, makes a proper M car even better. One that will be driven and enjoyed on street and track all over the world. That is what M is.
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      04-26-2026, 04:07 PM   #46
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Quote:
Originally Posted by Ehloo View Post
so are you going to keep and run the full unlocked csl file?

i have never dyno my race chip and would assume similar numbers but its nice not have an aftermarket part attached


from a warranty stand point and dealer flagging for aftermarket mods. can a dealer tell if the ECU unlocked?

is the file lost when the dealer updates your software?
Honestly don’t know 🤣, I’m running the limited tune and couldn’t be happier, left it this way coming home from the dyno but I flashed the unlimited torque and planning on running it this way going forward.

I don’t go to the dealer for anything except the oil changes and god willing I don’t need to visit them for anything. Sadly I’m prepared to be denied anything if the need comes for a claim. I don’t receive updates from them and made it clear with my advisor to not do so. Hoping for the best but prepared for the worse. Hopefully the s58 is good to me.

Supposedly my unlock is the type that even if locked once more MHD could unlock it again.

Last edited by yomny; 04-26-2026 at 04:11 PM..
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      04-26-2026, 04:09 PM   #47
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Quote:
Originally Posted by Devil doc View Post
I just want to say thank you for taking the time to shed some light on the effects of the CS vs CSL map on the manual S58, and for doing the comparison between the 550nm manual torque limit map vs the full unrestricted 650nm version.

Again thank you for helping the manual community with this information, same goes for chris3g for going out of his way to help the community with further information about the topic.
Much appreciate the love. I love my car and the manual and thought this was a good option as opposed to going with a full custom tune. The drive ability is phenomenal and since I don’t need extra features or anything special I opted for this tune.

I jumped on the chance to unlock knowing the risks because I despised the cold start, especially after the fatback exhaust so I used the MHD to fully disable this.
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      04-27-2026, 05:44 AM   #48
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Quote:
Originally Posted by yomny View Post
All this shots are very unprepared and personal, not meant to be a selling point or advertisement. You're getting way too technical for the benefit of this. I paid for the tune, unlock and dyno time. Just wanted this to be beneficial for all of those interested. You want research, do your own. Some of your questions and or concerns are answered throughout the thread.

Dyno guys were kind enough to entertain all my requests to document the best possible way. The rev range situation between CS and CSL maps was explained and the STD correction being fixed and not choosing SAE was also explained. I'm not a shop owner or in business with any, just a guy that wanted a safe tune for the manual and didn't have enough with the CS

All others, enjoy.
…and we appreciate you for it. Some folks will always take any data down to the studs; no worries. The charts clearly show that it’s a worth while tune, that’s been factory tested by BMW.

Also the TQ jump is Bonkers! I bet you felt that pulling away from the shop ;-)

Second best OTS might be the CarBahn tune. You can get the maps without the PCU, and the supplemental warranty

Quick reminder - what other supporting mods do you have?
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      04-27-2026, 05:52 AM   #49
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Quote:
Originally Posted by BTB_6MT View Post
I asked my M-certified dealer about this when I placed my order, and they said they can tell when the car is flashed and even if it's flashed back, because there is a log that's kept of SW versions. Anything that doesn't match the factory approved versions will flag in their system. They told me that flashing an M2 to a CS or CSL tune will void the warranty (powertrain only? Not sure, didn't ask...) even though it is BMW software. And, under warranty or not, their system may erase the flash to "correct" the "error".

The logging claim is likely true, so flash at your own risk. My 2017 Land Rover keeps the current and most recent last SW onboard, and keeps a change log that you can see if you have the right aftermarket tool. However, my dealer doesn't reflash my mods now that it's out of warranty.
Speaking as someone who Flashed/un-flashed and went in for warranty work concerning a faulty BDC module, no one said boo to me, and my SA was super concerned.

They scanned the car, and worked with BMW NA to get the correct module confirmed and approved for replacement.

Now, technically this wasn’t a drive train issue, but my understanding is that the ISTA will immediately detect any incongruities beyond even what the dealer can see.

I can’t speak to what they saw, but all
My work was covered.
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      04-27-2026, 10:03 AM   #50
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Quote:
Originally Posted by digitldlnkwnt View Post
Speaking as someone who Flashed/un-flashed and went in for warranty work concerning a faulty BDC module, no one said boo to me, and my SA was super concerned.

They scanned the car, and worked with BMW NA to get the correct module confirmed and approved for replacement.

Now, technically this wasn’t a drive train issue, but my understanding is that the ISTA will immediately detect any incongruities beyond even what the dealer can see.

I can’t speak to what they saw, but all
My work was covered.
That's good to hear and an important data point. It sounds like you unflashed before you went in for service, right? Did you re-flash after you got the car back?

Don't know for sure how any logging might work, and if the service advisor is cool (and probably, if you're super cool with them and not a dick in general) they may overlook some things. However, these days all data from nearly every new car goes back to the automaker mothership in the cloud. How it's used to adjudicate warranty claims isn't clear and likely not standard from automaker to automaker.
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      04-27-2026, 12:57 PM   #51
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Quote:
Originally Posted by BTB_6MT View Post
That's good to hear and an important data point. It sounds like you unflashed before you went in for service, right? Did you re-flash after you got the car back?
I unflashed before I went in and crucially right after the error reappeared with out the flash files.
Yes, after I was sure that the issue was resolved I reflashed.
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      04-27-2026, 01:41 PM   #52
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Quote:
Originally Posted by digitldlnkwnt View Post
…and we appreciate you for it. Some folks will always take any data down to the studs; no worries. The charts clearly show that it’s a worth while tune, that’s been factory tested by BMW.

Also the TQ jump is Bonkers! I bet you felt that pulling away from the shop ;-)

Second best OTS might be the CarBahn tune. You can get the maps without the PCU, and the supplemental warranty

Quick reminder - what other supporting mods do you have?
The car with the torque limit removed feels dangerous lol, as I had mentioned to Chris I normally drive with DSC off and traction on 1 which gave me the right feel for my daily activities, that all had to be changed with this map.
I’m only running an ActiveAutowerke catback, stock DP and secondary race cats, opted for less noise so still have cats everywhere.
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      04-27-2026, 05:16 PM   #53
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Quote:
Originally Posted by yomny View Post
The car with the torque limit removed feels dangerous lol, as I had mentioned to Chris I normally drive with DSC off and traction on 1 which gave me the right feel for my daily activities, that all had to be changed with this map.
I’m only running an ActiveAutowerke catback, stock DP and secondary race cats, opted for less noise so still have cats everywhere.
I want to dyno my OTS 93 octane map, see how it compares to the CSL numbers, I had to upgrade to a PTB clutch but now it definitely holds anything I throw at it with ease, I enjoy driving with DSC off or MDM almost 24/7, except on the ocassional Florida rain. Thank you for recording and Dyno of all these details!
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      04-27-2026, 06:23 PM   #54
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Kudos to OP and Chris3g! I actually did the CSL 3.0 tune with Chris when I first unlocked and it pulls hard up top. I did not have the tq limit removed as I did not know that could be coded out. Regardless, I didn’t stay on the CSL tune very long, as I went ahead and got a custom tune from Bend and upgraded my clutch.

OP, do you have any logs you can share for your new tune?
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      04-27-2026, 08:23 PM   #55
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Quote:
Originally Posted by yomny View Post
The car with the torque limit removed feels dangerous lol, as I had mentioned to Chris I normally drive with DSC off and traction on 1 which gave me the right feel for my daily activities, that all had to be changed with this map.
I’m only running an ActiveAutowerke catback, stock DP and secondary race cats, opted for less noise so still have cats everywhere.
And you have only one manly hand to deal with it after you shift.
That’s the real reason for the torque table - saving our dumb asses from ourselves
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      Yesterday, 10:56 AM   #56
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Ok, this is sick! I was going to go CS flash when warranty is up, but this has me sold!
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      Yesterday, 11:06 AM   #57
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Quote:
Originally Posted by Sammykiller View Post
I want to dyno my OTS 93 octane map, see how it compares to the CSL numbers, I had to upgrade to a PTB clutch but now it definitely holds anything I throw at it with ease, I enjoy driving with DSC off or MDM almost 24/7, except on the ocassional Florida rain. Thank you for recording and Dyno of all these details!
How's the clutch? The one thing i always hate is extra noise and the chatter with the lightweight flywheels.
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      Yesterday, 11:09 AM   #58
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Quote:
Originally Posted by SLE3PER View Post
Kudos to OP and Chris3g! I actually did the CSL 3.0 tune with Chris when I first unlocked and it pulls hard up top. I did not have the tq limit removed as I did not know that could be coded out. Regardless, I didn’t stay on the CSL tune very long, as I went ahead and got a custom tune from Bend and upgraded my clutch.

OP, do you have any logs you can share for your new tune?
What would you normally log. I'm very new to this MHD s58 tuning logging world. I could get a few in due time if you tell me what to look for. The CSL tune is very smooth, the unlimited as you could see in the dyno has burst of power around 3.5k which could feel a bit much for some if driving in sports plus (do consider that im old and my opinions are the lesser 1% crowd)
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      Yesterday, 11:11 AM   #59
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Quote:
Originally Posted by digitldlnkwnt View Post
And you have only one manly hand to deal with it after you shift.
That’s the real reason for the torque table - saving our dumb asses from ourselves
Very true!! its not the same in an auto lol, watching the RPMs shoot up and the rear wheels light up while trying to not bounce of the limiter and keep it straight with one hand
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      Yesterday, 11:13 AM   #60
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Quote:
Originally Posted by NJbaitshop View Post
Ok, this is sick! I was going to go CS flash when warranty is up, but this has me sold!
At the end of the day its a flash and if dealer wants to be petty they will be so at least go for the CSL limited (its a file made for our drivetrains), you'll love it. The power/torque delivery is soooo smooth even in sports plus.
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      Yesterday, 11:14 AM   #61
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Quote:
Originally Posted by yomny View Post
What would you normally log. I'm very new to this MHD s58 tuning logging world. I could get a few in due time if you tell me what to look for. The CSL tune is very smooth, the unlimited as you could see in the dyno has burst of power around 3.5k which could feel a bit much for some if driving in sports plus (do consider that im old and my opinions are the smaller 1%)
Normally during the tuning process for street data logging, you would go WOT from 2k to 7k rpm in 3rd gear. This will simulate your car on a dyno and can interpret your timing, boost, temps, etc. I would like to see the timing corrections on all 6 cylinders if you can. Make sure you got good gas (Top Tier) from high turnover stations like Costco. I’ve found that Shell in my area has bad fuel. YMMV.
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      Yesterday, 04:47 PM   #62
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Quote:
Originally Posted by yomny View Post
Very true!! its not the same in an auto lol, watching the RPMs shoot up and the rear wheels light up while trying to not bounce of the limiter and keep it straight with one hand
…and keeping your cheeks clenched at the same time 😜
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      Yesterday, 07:04 PM   #63
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Can you also do this upgrade with a unlock and Bootmod3?
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      Yesterday, 07:15 PM   #64
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Quote:
Originally Posted by Dave97 View Post
Can you also do this upgrade with a unlock and Bootmod3?
Would have to ask chris3g, something about MHD allowing you to use custom maps and boot mod using cloud based tuners. Please don’t quote me on that.
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      Yesterday, 08:40 PM   #65
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Quote:
Originally Posted by Dave97 View Post
Can you also do this upgrade with a unlock and Bootmod3?
bm3 doesn't allow you to upload and flash your own bin files, so at this time i am not offering this on bm3 as i'd have to get set up as an authorized tuner with them to do it. As this is a somewhat niche offering right now, doing it through MHD keeps it simple and easy.

however i may offer this in the near future as remote service which wouldn't require any tuning software license. Will assess additional options other than via MHD if the demand for it is there.
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      Yesterday, 11:25 PM   #66
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Chris3g,

Can you raise the redline to about 7500+ rpm? If the engine is able to handle it, then maybe we can stay around the 550nm all the way to the new redline. I know they kept the RPMs to 7200 due to the automatic transmission, but us The manual crowd would love to rev higher lol. The s55 rev to around 7500, why can’t we?
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