Are all GTS tune the same?

[Fezza]

Originally Posted by chocstraw

Whoa I hadn’t put it together before but this does disable auto start stop. I’ve only put it on when in terrible traffic and it just restarts the engine and kicks you into neutral.

-42 is the one I’m on.

Yeah I had to code SS to remember my last setting at engine off so it's always off. GTS never had SS so can never get it back when running the GTS tune.

[derbo]

I'm updating this thread instead of making a new one:

In the DATEN Files there is a kmmData folder that has information on which ZB relates to which chassis code.
You can look at the kmm_SG.txt for more details.

## ZB 7845773 - E92 GTS

+G;1;1038481;A;EGS_299_S65_GS40_B44_GTS
7844403;7844405;7582765;1009450;WHNSL
7845773;7844978;7582765;1103450,1103470-1403430,1012500-;WHNSL
7844976;7844978;7582765;1103410,1109350-1012460,1006500,1009500-1009512;WHNSLL

## ZB 7848442 - E90 CRT

+G;1;1285580;A;EGS_303_S65_GS40_B44_CRT
7848442;7844978;7582765;1207490,1207500;HNL

[m3kompressor]

ZB 7847869 - Up to date Euro Flash?
- Smoother than US, faster to reverse
- Better at low speeds than US but still noticeably clunkier than GTS
- Interesting note: The best sounding transmission tune.
-----Gives a really, really nice overrun sound when doing 1-2s and 2-3s at lower speeds.
-----Clear, audible cut of power during some shifts in higher settings, sounds mechanical & satisfying, like racking a gun. Hard to explain.
-5500RPM launch, not very useful. pure entertainment, theater.
- I switch to this when tracking and would use it all the time if it was as intelligent at slipping the clutch as GTS when operating at low speeds.

ZB - 7847868 Current US tune???
- No notable characteristics. Felt very much like when I got the car, which came flashed with DME & trans with 2013 SPDaten flashes. Felt like many of the other stock M3s I've driven. Not bad, but could be better.


7847869 is the current US DCT flash

7847868 is current euro DCT flash

[jp1984]

I thought there was two GTS Tunes

one came with the GTS and had a higher redline for launch control

the other was an updated version for the CRT had slightly lower launch control.

I have seen respected members say that the fastest is actually the stock tune for 0-60.

I use the updated GTS tune as I find it most pleasant for daily driving.

[BPMSport]

Originally Posted by SYT_Shadow

My module shows 7 left... I asked people who know these things and apparently when we get to 0 we cannot flash anymore, if you want to continue the module has to be sent out to have a chip replaced.
This is like the E46M.

So, it CAN be flashed more times but we should be careful as it'll be a pain for sure


It's clear the GTS/CRT/Euro update files are way, way better than the US one. I've been driving the stroker with the US file and the DCT felt like a POS, very frustrating.
It's funny but I feel the GTS/CRT flash makes a incredibly large difference in the car's behavior.

Cheers and thanks for looking all this stuff up

This is totally incorrect.. the people who you think "know" are actually quite clueless…

The reference to 'X' flashes left refers to the space allocated for the software identification entries, different control units have different areas allocated for this information (for example, the DME has 64). This doesn't mean that you can't flash the DME 100 times or the DCT 100 times, it only means that this particular field can be written X amount of times. Writing that field is not required to flash the control unit. If using a tool that requires writing(appending) these fields, then it will fail flashing as a consequence of not having space in this area, but if i recall correctly, the write will be rejected prior to erasure of the flash if full. The field is of a fixed length and each entry in the field will take that fraction of the total if written in the first place. For example, if you have a space of 128 bytes for this field, and each flash appends 8 bytes to this field, 16 "flashes" would be allowed (w/ UIF writes).

The E46 MSS54/HP and E39 are similar to MSS60/GS40 in terms of the allocation of a fixed amount of data for informational fields, but differ in terms of an actual flash iteration limit. Both of these things are mutually exclusive.

To clarify this and illustrate opposing scenarios that could exist, you could have an E46 M3 that says it has 12 flashes left, when it has none, and a DCT M3 that says it has 1 flash left that could be flashed 20 more times.

[E90325M]

Originally Posted by Leonardo629

Flashed 7848442 (updated GTS) and it is much smoother than 773 (GTS tune), especially during slowing down and downshifts, I'd say everyone should give it try.

I did the same yesterday, and 7848442 feel better than my previous Alpine DCT tune which came with the car when I bought the car. everyone should try it.

[E90325M]

I recently upgraded my 2011 E92 m3 software at the dealership to the latest one, it is E89x-21-07-550.

And all my tunes were erased. So I came here to find the procedure to do the GTS DCT tune. Before upgrade to GTS DCT tune ZB 7848442, winKFP shows my stock DCT ZB version is 7844978.

[The-Traveler]

I've been running ...442 GTS tune for years but want auto-start-stop back. Can anyone confirm that the UPDATED EURO TUNE ZB 7847869 has auto-start-stop?

Any reason going from 442 to 7847869 with WinKFP won't work?

[wyatth]

Originally Posted by The-Traveler

... but want auto-start-stop back. ...

[The-Traveler]

Originally Posted by wyatth

Because I have an exhaust leak before the cats that won't be fixed for a week and I've tuned up the car a lot, so I want to keep driving it. Also, when you flash the GTS tune you're biased that it's better.

I want to see if the updated regular tune is actually worse, because if it's not, the ASS feature I can use to save money on fuel.

[wyatth]

Fair enough on the fuel leak in the meantime. Long term, I think your fuel savings will be minimal and your starter or something else will fail early and break even.
In terms of bias, I try to be objective with all changes I've made to my car. Some are reversed, some are a sideways move and not worth the time/effort, others are great. DCT flash is solidly in the latter camp. I've put thousands of miles on stock software, Alpine DCT software, and GTS -442 tune, which is where I'm staying. YMMV
The ASS button is the only button I have on the row below the radio. I purchased the button-free panel in order to ditch the button completely for a cleaner look, but never got around to it.

[spammysammich]

Originally Posted by wyatth

Fair enough on the fuel leak in the meantime. Long term, I think your fuel savings will be minimal and your starter or something else will fail early and break even...

Good thing the starters on this car are so easy to get to and service. I'll second the BS call on fuel savings.

[The-Traveler]

Originally Posted by spammysammich

Good thing the starters on this car are so easy to get to and service. I'll second the BS call on fuel savings.

First of all EPA fuel savings are 8% from what I recall.

Second of all the starter is many times stronger on the ASS cars than the prior ones. Check RealOEM.

[chocstraw]

Originally Posted by The-Traveler

First of all EPA fuel savings are 8% from what I recall.

Second of all the starter is many times stronger on the ASS cars than the prior ones. Check RealOEM.

I think all it does is grant manufacturers a credit for improved fleet MPG. EPA requires that the entire fleet has some minimum MPG, which is why they were offering i3s for basically nothing. You could get them for like a $300 lease for a minute.

I would caution against the use of ASS, from both an engine wear and environmental standpoint. A good deal of engine wear occurs during startup as oil pressure to the bearings isn't great. Both rods and mains. I think it's far more carbon intensive to rebuild or replace an engine than to just let it idle at stoplights. One of those counterproductive regulations IMO. Similarly, almost all cars are turbo now because they pass the EPA tests much more easily, but if you don't do a lot of highway driving and you're driving hard or doing city driving, MPG is pretty similar. I get better MPG than my mother's VAG V6tt / Macan GTS.

The newer engines like the B58 have a coating on either the upper or lower bearing, I forget, which is supposed to help with this issue. Ours don't have that.

[asma123]

How can I go about checking what version my DCT has?
I’d imagine is probably 7847868
Stock US cad.
I tried using INPA but for some reason it just doesn’t connect. I can connect with everything else tho like winfpk, ncsexpert and prob other tools as well

Mine starts up in manual mode and s2. If I move the stick over again it sets it to (D and s5)

[The-Traveler]

FYI fellas, I flashed ZB 7848442 (updated gts tune) 5 - 6 years ago on my car. Here's how the software version looked in INPA as of yesterday before I changed it to ZB 7847869 which is the updated Euro Flash.

I don't have a screenshot of the after, but all of the version numbers are much higher. ei. v12 instead of v11.

I want you to know that the 69 shifts really well and it's probably worth trying these tunes again. I'm betting significant improvements were made after the F30 M3/M4 cars launched. Also, I got Auto Start Stop working again. Here are the problems I had with that feature.

Heads up. Just because you code 60_agm doesn't mean CAS will accept it.

[m3kompressor]

Originally Posted by The-Traveler

I've been running ...442 GTS tune for years but want auto-start-stop back. Can anyone confirm that the UPDATED EURO TUNE ZB 7847869 has auto-start-stop?

Any reason going from 442 to 7847869 with WinKFP won't work?

7847869 IS NOT EURO ! ITS THE US TUNE! It starts in S3 that means its US!

the EURO SPEC CARS STARTS IN D!

[GinTonic]

Originally Posted by chocstraw

Like SYTShadow said, If you're decent with computers you're better off buying the cable and learning how to flash it with WinKFP. It takes about 7 minutes to do each flash and I've tried like 4 different ones now. WinKFP is much easier to use than NCSDummy or NCSExpert too. The 335i / N54 sites offer better DIY guides on how to use these programs and get them running.

I should probably start this as its own thread but my brief notes

All ZBs are for the module GS40

ZB 7845773 - This is supposedly what shipped with the GTS.
-Smoother and smarter transmission settings in general.
- S1-S3 do not blip downshifts, they slip downshifts. For this reason I use S4 for most driving.
-S6 will ease into upshifts when around quarter throttle or less, no shift shock, stock US / Euro would upset the car a lot if you did this.
-S4-S6 slam into upshifts, absolutely no cut of power, will really spin from a 1-2 gear shift, 2-3 will sometimes spin even on a hot day.
-Been a minute but I believe launch control was like 3500-4500. Hooked up much better than the stock tune, which just spins tires.
-Sounds (exhaust note) like a torque converter automatic, meshing into upshifts.

ZB 7848442 - Updated GTS?
- Currently using this, very much the same, a minor upgrade
- Can say with certainty that launch control is at 4500, hooks much better than the 5500 launch
- Perhaps a bit smoother at low speeds, equally violent when pushed.

ZB 7847869 - Up to date Euro Flash?
- Smoother than US, faster to reverse
- Better at low speeds than US but still noticeably clunkier than GTS
- Interesting note: The best sounding transmission tune.
-----Gives a really, really nice overrun sound when doing 1-2s and 2-3s at lower speeds.
-----Clear, audible cut of power during some shifts in higher settings, sounds mechanical & satisfying, like racking a gun. Hard to explain.
-5500RPM launch, not very useful. pure entertainment, theater.
- I switch to this when tracking and would use it all the time if it was as intelligent at slipping the clutch as GTS when operating at low speeds.

ZB - 7847868 Current US tune???
- No notable characteristics. Felt very much like when I got the car, which came flashed with DME & trans with 2013 SPDaten flashes. Felt like many of the other stock M3s I've driven. Not bad, but could be better.

Taking the time to type this up because I was frustrated with the lack of notes on characteristics and ZB numbers for all of these flashes. Hopefully someone searching in the future will find this and know where to go.

I would spend your money on getting someone to do Euro MDM, because using those programs is more complicated. American MDM is legitimately no fun at all.

I have been running the 7845773 (GTS) file ever since I bought my car. I think this was one of the first things I did to it when I got it. Honestly, this GTS file really makes the DCT transmission that much more fun. The violent, snappiness of S6 is really something.

Since this thread came up the other day - Today, I uploaded the 7847869 (Euro?) file and went for a quick drive. No bueno. I can see what you mean about the theatrical aspect of it, but driving in S6 is made it feel sedated.

For spring/summer/fall weather, I have my m mode set to DSC off, and S6 which I normally drive in unless its raining or if traffic is bad, I'll knock down to S3. Rarely do I ever drive in auto.

I havent tried the CRT file, but I imagine it's a little softer / smoother since the car is a 4 door and intended to carry passengers.

[bmxcamel]

Just since there appears to be a lot of confusion in this thread about which ZBs are from what model/locality:

7847868 = current euro DCT flash
7847869 = current US DCT flash
7848442 = E90 M3 CRT DCT flash
7845773 = E92 M3 GTS DCT flash

[M3-EffECtS]

After the flash do i have to do some of the 4 Servicefunktionen for the dct? Like clutch calibration or dct adaptions reset? Or just flash the dct crt 8442 and go?