GTS - DCT Flash Feedback Review //Lets Hear It !

[zac5]

Originally Posted by M3SQRD

I haven't noticed a change in response time between pulling a paddle and a gear change with the GTS DCT software. The GTS DCT software is definitely not as abrupt when shifting under WOT at/near redline but I don't know whether this is due to a slower trans shift time and/or changes to throttle "lift" strategy, clutch re-engagement, etc.

Does your DCT do this all of the time or, for example, only after ~20+ min of track time? Which DCT setting do you use on track? I do know the e92 M3 DCT paddle pull-to-gear shift time starts to lag as the DCT temp rises on track. An aftermarket DCT cooler addresses this lag issue on the e9x M3; however, I'm unaware of any f8x M3/4 DCT on-track cooling issues.

I use S3 setting on track. Yes, after 15+ min of track time the shifting started feeling a bit laggy. It might has something to do with the trans temp rising.

[SeanWRT]

Originally Posted by BuLoOoSki

I first tried this flash last October, and like some of you here, I also didn't feel much of a difference. My main goal with the DCT flash was the increased clamping force (I guess we all assume it comes with it), but there were some small things I didn't like about the DCT that I was hoping the GTS flash would take care of. However, in terms of daily drivability I didn't feel any improvement.

Two weeks ago however I was working with proTUNING Freaks to integrate the latest GTS TCU changes into the BM3 DCT flash just to try it out and see if I notice any of the improvements many of you are talking about. After driving for about 2 weeks and giving the DCT time to adapt I'm pretty happy with the update.

Creeping/slowly accelerating from a stop in first gear is much smoother now (driving in S2), as it used to be jerky and quite rough before.

Shifting in S2 is much smoother in general, particularly downshifts. I used to feel the DCT very clunky, particularly in the second to first gear downshifts. Upshifts also seem more seamless now.

Lastly, contrary to what you'd expect from a GTS flash (I personally assumed it would be all about performance), but the car drives much more "efficient" in D1. Besides shifting smoother, it also shifts much sooner than before and doesn't hold the gears as long as before. I guess that will save a few trees in the long run for you tree huggers :P

Is BM3 TCU the same thing as GTS TCU?

[BuLoOoSki]

Originally Posted by SeanWRT

Is BM3 TCU the same thing as GTS TCU?

Yes

[kitesurfer]

Originally Posted by M3SQRD

I haven't noticed a change in response time between pulling a paddle and a gear change with the GTS DCT software. The GTS DCT software is definitely not as abrupt when shifting under WOT at/near redline but I don't know whether this is due to a slower trans shift time and/or changes to throttle "lift" strategy, clutch re-engagement, etc.

Does your DCT do this all of the time or, for example, only after ~20+ min of track time? Which DCT setting do you use on track? I do know the e92 M3 DCT paddle pull-to-gear shift time starts to lag as the DCT temp rises on track. An aftermarket DCT cooler addresses this lag issue on the e9x M3; however, I'm unaware of any f8x M3/4 DCT on-track cooling issues.

A race team had a DCT cooler developed for the F8x , wonder anyone is running it?

http://www.bimmerworld.com/Driveline...3yQaAsqp8P8HAQ

[somer]

OK I have a question for any of the guys that have driven both M5/M6 and M3/M4. I mentioned this in another thread but after some driving of these 2 platforms, the DCT software is completely different between them. The M3/M4 has much more of a "surge" to it and almost lazy like upshifts when not at full throttle or lower in the RPM band. Conversely the M5/M6 just bangs shifts at any RPM or any level of throttle, they're very quick and direct. Does the M4 GTS flash solve most of this? Does it act more like the way the F10 M5 does?

[BuLoOoSki]

Originally Posted by kbc

OK I have a question for any of the guys that have driven both M5/M6 and M3/M4. I mentioned this in another thread but after some driving of these 2 platforms, the DCT software is completely different between them. The M3/M4 has much more of a "surge" to it and almost lazy like upshifts when not at full throttle or lower in the RPM band. Conversely the M5/M6 just bangs shifts at any RPM or any level of throttle, they're very quick and direct. Does the M4 GTS flash solve most of this? Does it act more like the way the F10 M5 does?

Slightly

[somer]

Originally Posted by BuLoOoSki

Slightly

Wish there was a way to just flash the F10/F12/F13/F06 DCT software on the M3/M4. Guess it's just not that simple.

[SeanWRT]

Originally Posted by kbc

OK I have a question for any of the guys that have driven both M5/M6 and M3/M4. I mentioned this in another thread but after some driving of these 2 platforms, the DCT software is completely different between them. The M3/M4 has much more of a "surge" to it and almost lazy like upshifts when not at full throttle or lower in the RPM band. Conversely the M5/M6 just bangs shifts at any RPM or any level of throttle, they're very quick and direct. Does the M4 GTS flash solve most of this? Does it act more like the way the F10 M5 does?

I flashed GTS to my m2 one month ago and I can relate to what you're saying.

It feels like always trying to put you in the highest gear possible all the time whatever mode you're in. Downshift seems lazy, the car is overall much less responsive.

I flashed it back to stock. It's probably only good for m3/4.

[aboulfad]

Originally Posted by aboulfad

...
PS: ok I flashed this morning 38C2_000_048_002 using Esys on my DCT, I'll observe and report in few days.

Ok so as expected, two weeks later, and I absolutely find no difference for my driving habits and stock M4 with the GTS DCT, same impressions I had last year. Note that whenever I update EGS software to that of the GTS, I always make sure they are on the same psdZ baseline. Shifting is the same, downshifting from D2 to D1 is sometimes jerky, going in reverse is same as before, "kangooroo effect" is still there...

[Motodude310]

One thing to keep in mind is the flash should prolong the life of the clutch packs on modded cars. If for nothing else, I'd still get it for that. I currently drive a MK6 GTI and shredded 3rd gear which was likely due to improper clutch pressure, slipping then engaging harshly, from running the stock TCU file while making 350 whp over a few years. Cost me almost 5 grand to fix, don't even want to think what the DCT on the M would cost to fix.

[nikosaur]

The car shifts to the highest possible gear much sooner in daily driving after flashing.

[BuLoOoSki]

Originally Posted by nikosaur

The car shifts to the highest possible gear much sooner in daily driving after flashing.

I would guess that's for fuel economy. You have the transmission setting button for a reason. Switch it to D2 if you feel D1 is too "efficient"

[nikosaur]

Originally Posted by BuLoOoSki

I would guess that's for fuel economy. You have the transmission setting button for a reason. Switch it to D2 if you feel D1 is too "efficient"

Wasn't a complaint, it suits my daily commute well. Once the road opens up, I just press the fun button

[Jaymax85]

Does anyone know how easy it is for the dealer to tell the car has a gts flash? Just wondering for Warranty work purposes

[aboulfad]

Originally Posted by HELLOimJ

Does anyone know how easy it is for the dealer to tell the car has a gts flash? Just wondering for Warranty work purposes

The dealer, not very easy, but FASTA data contains all ECUs software programming info (btld, swfl, ibad ...) and IF let's say BMW develops some special program to analyse FASTA data once collected to check the software version of DKG or DME and alarm either dealer/BMW bounty hunters, then yes it's as clear as day. (M4 DKG data below)

...
	<Result Name="VERSION">001.001.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6A</Result>
	<Result Name="PROZESSKLASSE_TEXT">Hardware (Elektronik)</Result>
	...
	<Result Name="VERSION">001.001.008</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6C</Result>
	<Result Name="PROZESSKLASSE_TEXT">Bootloader</Result>
	...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6E</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
         ...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F72</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
...

[Lojs]

Originally Posted by aboulfad

The dealer, not very easy, but FASTA data contains all ECUs software programming info (btld, swfl, ibad ...) and IF let's say BMW develops some special program to analyse FASTA data once collected to check the software version of DKG or DME and alarm either dealer/BMW bounty hunters, then yes it's as clear as day. (M4 DKG data below)

...
	<Result Name="VERSION">001.001.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6A</Result>
	<Result Name="PROZESSKLASSE_TEXT">Hardware (Elektronik)</Result>
	...
	<Result Name="VERSION">001.001.008</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6C</Result>
	<Result Name="PROZESSKLASSE_TEXT">Bootloader</Result>
	...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6E</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
         ...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F72</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
...

It would be thrilling to see a court case in which BMW says: "ve voyd ze clients varranti, becoz he yuzd zi softver VE developed for OUR transmishn"

[proTUNING Freaks]

Originally Posted by aboulfad

The dealer, not very easy, but FASTA data contains all ECUs software programming info (btld, swfl, ibad ...) and IF let's say BMW develops some special program to analyse FASTA data once collected to check the software version of DKG or DME and alarm either dealer/BMW bounty hunters, then yes it's as clear as day. (M4 DKG data below)

...
	<Result Name="VERSION">001.001.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6A</Result>
	<Result Name="PROZESSKLASSE_TEXT">Hardware (Elektronik)</Result>
	...
	<Result Name="VERSION">001.001.008</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6C</Result>
	<Result Name="PROZESSKLASSE_TEXT">Bootloader</Result>
	...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F6E</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
         ...
	<Result Name="VERSION">000.048.002</Result>
	<Result Name="SGBM_IDENTIFIER">00001F72</Result>
	<Result Name="PROZESSKLASSE_TEXT">Software ECU Speicherimage</Result>
...

One point you might be glad to learn is that with bootmod3 none of the software versions/values change so it is entirely transparent in that respect when it comes to both the DME and the TCU

[aboulfad]

Originally Posted by proTUNING Freaks

One point you might be glad to learn is that with bootmod3 none of the software versions/values change so it is entirely transparent in that respect when it comes to both the DME and the TCU

Although I am not worried about this, it's cool that with BM3 swfl versions are kept the same. Of course I wouldn't have expected any less from people that can remove tamper codes, tune S55,... all from an app

[SpeedFried]

Originally Posted by SeanWRT

I flashed GTS to my m2 one month ago and I can relate to what you're saying.

It feels like always trying to put you in the highest gear possible all the time whatever mode you're in. Downshift seems lazy, the car is overall much less responsive.

I flashed it back to stock. It's probably only good for m3/4.

I can reiterate exactly what Sean is saying. On the M2 this flash is horrible and leaves the car very unresponsive regardless of the mode. There is virtually no difference in RPMs for each gear between comfort and sport +. The only difference is throttle sensitivity. So it never holds revs in any mode and shifts at 2k RPMs unless you're at least 1/2 throttle. I regret flashing this via BM3 because it ruined the drivability of the car and I can't flash back to stock with their app.

It would be great if I could flash back to stock using a different method. So if someone could help me out with this please respond or PM me!

[somer]

Is there any way to get the M5/M6 DCT tune?

[aboulfad]

Originally Posted by SpeedFried

...It would be great if I could flash back to stock using a different method. So if someone could help me out with this please respond or PM me!

I am sure you can revert back with BM3, just contact them via their support. Given you are asking how to flash via other methods, here take a quick read http://f80.bimmerpost.com/forums/sho....php?t=1264746 but it ain't for the faint of heart. Or you can contact some of the sponsors to flash it remotely.

[SeanWRT]

Originally Posted by aboulfad

I am sure you can revert back with BM3, just contact them via their support. Given you are asking how to flash via other methods, here take a quick read http://f80.bimmerpost.com/forums/sho....php?t=1264746 but it ain't for the faint of heart. Or you can contact some of the sponsors to flash it remotely.

No, BM3 software does not have option of transmission reverting back at this point, confirmed by PTF.

It has to be done in the traditional way.