GTS Transmission Flashed to my M2...and flashed back to stock

SeanWRT · 05-26-2017, 01:32 AM

Update:

Been a month and I found two negatives:

Whatever mode you're in, c/s/s+, GTS TCU is too eager to upshift, but is too lazy to downshift when you want it. Therefore the car feels less responsive and thus slower.

In hidden mode (sequential + MDM) burble is gone. And you have less burble because it always stays at lower rpm ranges.

I suspect that GTS is not fully compatible with m2, so the ECU is always in "comfort" shifting logic.

The car is much smoother in whatever mode no doubts but is less performance oriented also.

I switched back to stock TCU yesterday. The car now holds longer at lower gear and thus the push comes noticeably quicker.

Anyone who did it shares experience?

Seba_r · 05-27-2017, 09:56 AM

Hi.

Would you be so kind and shere how to revert back to stock map on TCU?
As I have exacly the same problems as you are discribing.Thank you.

M2Dynamic · 05-27-2017, 10:36 AM

Quote:

Originally Posted by SeanWRT

Update:

Been a month and I found two negatives:

Whatever mode you're in, c/s/s+, GTS TCU is too eager to upshift, but is too lazy to downshift when you want it. Therefore the car feels less responsive and thus slower. Different modes seem to have only more aggressive throttle mappings, but the shifting strategies are the same, very much like the comfort mode from stock TCU.

In hidden mode (sequential + MDM) burble is gone. And you hear less burbles due to it's always going to lower rpm ranges when you lift up throttle.

I am speculating that GTS is not fully compatible with m2, so the ECU is always in "comfort" shifting logic, any the display of C and hidden mode gone is any indication.

The car is much smoother in whatever mode no doubts but is less performance oriented also.

I switched back to stock TCU yesterday. The car now holds longer at lower gear and thus the push comes noticeably quicker.

Anyone who did it shares experience?

Hey Sean! Same experience here. Can you please explain how you flashed back to stock TCU? A bunch of us heard you can't just simply flash back to stock tcu. Would love to know how! Thanks!

SeanWRT · 05-28-2017, 06:36 AM

I think who flashed your car should know how to flash it back, the same process.

M2Dynamic · 05-28-2017, 08:08 AM

Quote:

Originally Posted by SeanWRT

I think who flashed your car should know how to flash it back, the same process.

I used bootmod3 so I flashed it myself. Supposedly you can't just flash it back so easily with bootmod3. I'll have to ask them.

SeanWRT · 05-28-2017, 08:17 AM

Quote:

Originally Posted by M2Dynamic

Quote:

Originally Posted by SeanWRT

I think who flashed your car should know how to flash it back, the same process.

I used bootmod3 so I flashed it myself. Supposedly you can't just flash it back so easily with bootmod3. I'll have to ask them.

I was told by PTF there is no flashing back TCU option available from BM3 software.

philisme · 03-27-2018, 01:59 PM

I did this mod today on my M2.
I only drove the car for 20km so it's too early to give a real feedback.

Does anyone know what "C1", "C2", "C3",... (instead of D) means ?

963mw · 03-28-2018, 04:24 AM

Quote:

Originally Posted by philisme

I did this mod today on my M2.
I only drove the car for 20km so it's too early to give a real feedback.

Does anyone know what "C1", "C2", "C3",... (instead of D) means ?

Comfort.

963mw · 03-28-2018, 10:24 AM

Anyone know whether M4 transmission drivelogic switch can be retrofitted onto the M2?

The thing about the GTS flash is its made for the M4 with the ability to change transmission aggressiveness. This is why "C" isn't behaving like the stock M2 "D" mode regardless of what mode you're in (Comfort, Sport, Sport +...). BM3 can't do anything about it because it's a BMW software flash for the transmission, and BMW doesn't let you put flash M4 software onto the M2.

Is there a way to code the default transmission settings to be on the medium aggression level? If there is, that would solve eagerness to upshift.

philisme · 03-28-2018, 12:55 PM

Same question for me. Maybe the M2 "Competition" will solve this problem...

aerobat · 03-28-2018, 01:46 PM

Can somebody please explain the point of this flash?
Especially for someone who always shift manual?

963mw · 03-28-2018, 03:41 PM

Quote:

Originally Posted by aerobat

Can somebody please explain the point of this flash?
Especially for someone who always shift manual?

faster shifts.

horsepower_and_hounds · 03-28-2018, 03:55 PM

Quote:

Originally Posted by 963mw

faster shifts.

& less clutch pack slippage = more HP to wheels and cuts down on premature wear caused by HP increase. More important on the modified F80/82 cars

SeanWRT · 03-28-2018, 06:27 PM

Quote:

Originally Posted by 963mw

Anyone know whether M4 transmission drivelogic switch can be retrofitted onto the M2?

The thing about the GTS flash is its made for the M4 with the ability to change transmission aggressiveness. This is why "C" isn't behaving like the stock M2 "D" mode regardless of what mode you're in (Comfort, Sport, Sport +...). BM3 can't do anything about it because it's a BMW software flash for the transmission, and BMW doesn't let you put flash M4 software onto the M2.

Is there a way to code the default transmission settings to be on the medium aggression level? If there is, that would solve eagerness to upshift.

PTF mentioned a couple times they'll be working on TCU when support ticket tapers off. Don't know when that would happen.

batmanf87 · 07-10-2018, 01:42 PM

I tried bm3 gts dct, but he feels smoother, the upshift is fast, and the reaction is not direct. Is it the same situation?

Yiruna · 07-10-2018, 04:33 PM

I thought they put in the option to revert back to stock TCU, no?

Drop the hammer · 07-10-2018, 06:14 PM

I used my bm3 to flash the gts into my m2 dct. I did not care for it due to always being comfort mode when in auto (regardless of the sport button setting). In manual it did shift fast but I lost burbles. So I left it for a week to get a good feel for it, then decided to flash back using the bm3. No problems, I was able to go back to the normal stock dct.

Bee Pee · 07-11-2018, 03:40 AM

Guys,

Great feedback on GTS TCU flash via BM3. Thanks.

Hopefully F87Comp FW flashes won't be too far away from appearing on BM3 ?? Likewise, F8x GTS or CS DSC, Mdiff and ePAS FW flashes via BM3 would be great too.

BP

Fuman · 07-13-2018, 08:38 PM

I hope you are liking it overall.

It should have been like this since day dot. The comfort shifting characteristic is so much better now. It was previously upshifting too late and downshifting too early at 5/6/7 - I mean there's enough torque in these motors.

cookiesowns · 07-16-2018, 12:48 AM

Quote:

Originally Posted by Bee Pee

Guys,

Great feedback on GTS TCU flash via BM3. Thanks.

Hopefully F87Comp FW flashes won't be too far away from appearing on BM3 ?? Likewise, F8x GTS or CS DSC, Mdiff and ePAS FW flashes via BM3 would be great too.

BP

With a new enough ISTEP ( mid-late 2017 is enough ) you can FDL code GTS or CS, DSC, MDiff ( no change there IIRC ) and EPS, via ESYS or bimmercode if they support it now.

It's all based on FDL code. If someone PM's me I can send you the hex value for the FDL code if you don't have the new ncd/caf mappings to use the drop downs.

DCT is flash only, no coding unfortunately.

Steveo · 07-25-2018, 04:11 PM

Can still flash GTS DCT with Esys, no?

MZWIE · 01-31-2019, 07:14 AM

I installed the DCT transmission update to GTS. This works great.

However, now the motor is very sluggish. Before the upgrade in SPORT+ the car reacted very quickly to throttle input. Now, it is very lethargic.

So we traded fast throttle response in S+ for weenie response with this. Not a very good trade at all.

I may have to revert back.

05-26-2017, 01:32 AM	#23
SeanWRT Colonel 3179 Rep 2,577 Posts Drives: E90 M3 & F87 M2 Join Date: Sep 2015 Location: Shanghai iTrader: (1)	Update: Been a month and I found two negatives: Whatever mode you're in, c/s/s+, GTS TCU is too eager to upshift, but is too lazy to downshift when you want it. Therefore the car feels less responsive and thus slower. In hidden mode (sequential + MDM) burble is gone. And you have less burble because it always stays at lower rpm ranges. I suspect that GTS is not fully compatible with m2, so the ECU is always in "comfort" shifting logic. The car is much smoother in whatever mode no doubts but is less performance oriented also. I switched back to stock TCU yesterday. The car now holds longer at lower gear and thus the push comes noticeably quicker. Anyone who did it shares experience? __________________ Lemania 2320
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05-27-2017, 09:56 AM	#24
Seba_r New Member 0 Rep 5 Posts Drives: M2 Join Date: Nov 2016 Location: Maribor iTrader: (0)	Hi. Would you be so kind and shere how to revert back to stock map on TCU? As I have exacly the same problems as you are discribing.Thank you.
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05-28-2017, 06:36 AM	#26
SeanWRT Colonel 3179 Rep 2,577 Posts Drives: E90 M3 & F87 M2 Join Date: Sep 2015 Location: Shanghai iTrader: (1)	I think who flashed your car should know how to flash it back, the same process. __________________ Lemania 2320
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03-27-2018, 01:59 PM	#29
philisme Private First Class 54 Rep 112 Posts Drives: BMW 1M Coupe + M2 + 330e Join Date: Aug 2014 Location: Luxembourg iTrader: (0) Garage List 2016 BMW 330e [0.00] 2012 BMW 1M coupe [10.00] 2017 BMW M2 [0.00]	I did this mod today on my M2. I only drove the car for 20km so it's too early to give a real feedback. Does anyone know what "C1", "C2", "C3",... (instead of D) means ? __________________ BMW 1M Coupe - AW - 2012 BMW M2 DCT - BSM - 2017 BMW 330e iPerformance - GSM - 2016
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03-28-2018, 10:24 AM	#31
963mw BMW Fanatic 331 Rep 1,076 Posts Drives: M2 Join Date: Nov 2014 Location: Mexico iTrader: (0)	Anyone know whether M4 transmission drivelogic switch can be retrofitted onto the M2? The thing about the GTS flash is its made for the M4 with the ability to change transmission aggressiveness. This is why "C" isn't behaving like the stock M2 "D" mode regardless of what mode you're in (Comfort, Sport, Sport +...). BM3 can't do anything about it because it's a BMW software flash for the transmission, and BMW doesn't let you put flash M4 software onto the M2. Is there a way to code the default transmission settings to be on the medium aggression level? If there is, that would solve eagerness to upshift. __________________ 18 BMW M2 \| ER DP \| ER CP \| Wagner Evo 2 Comp Intercooler \| Aquamist HFS4 \| BM3 \| CSF Oil Cooler \| AFE Drop-in Filter \| Bilstein B16 PSS10
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03-28-2018, 12:55 PM	#32
philisme Private First Class 54 Rep 112 Posts Drives: BMW 1M Coupe + M2 + 330e Join Date: Aug 2014 Location: Luxembourg iTrader: (0) Garage List 2016 BMW 330e [0.00] 2012 BMW 1M coupe [10.00] 2017 BMW M2 [0.00]	Same question for me. Maybe the M2 "Competition" will solve this problem... __________________ BMW 1M Coupe - AW - 2012 BMW M2 DCT - BSM - 2017 BMW 330e iPerformance - GSM - 2016
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03-28-2018, 01:46 PM	#33
aerobat Private First Class 137 Rep 128 Posts Drives: M Roadster Join Date: Dec 2016 Location: Sweden iTrader: (0)	Can somebody please explain the point of this flash? Especially for someone who always shift manual? __________________ Current: M Roadster Silver/Black (Fun car), BMW 330ti Compact (Trackday), Mercedes C220d AMG Estate (Everyday) Previous: BMW M2 DCT M Performance Suspension/Stage2, Porsche 993 Carrera 2S, Porsche 993 Carrera 2, Porsche 964 Carrera 2 Cab,Mazda RX8, Porsche 930 Turbo, BMW M3 E36, BMW M3 E30, BMW M5 E34, BMW 325iM Coupe
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07-10-2018, 01:42 PM	#37
batmanf87 Registered 6 Rep 2 Posts Drives: f87m2 Join Date: Jul 2018 Location: Taiwan iTrader: (0)	I tried bm3 gts dct, but he feels smoother, the upshift is fast, and the reaction is not direct. Is it the same situation?
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07-10-2018, 04:33 PM	#38
Yiruna Captain 394 Rep 599 Posts Drives: M2, C63s, 718 Cayman GT4 Join Date: Aug 2016 Location: California iTrader: (0) Garage List 2018 BMW M2 [0.00]	I thought they put in the option to revert back to stock TCU, no? __________________ 2018 MG M2 - Ohlins R
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07-10-2018, 06:14 PM	#39
Drop the hammer First Lieutenant 249 Rep 391 Posts Drives: '17 F87 M2 AW, Dct Join Date: Mar 2012 Location: Calgary, AB, Canada iTrader: (0)	I used my bm3 to flash the gts into my m2 dct. I did not care for it due to always being comfort mode when in auto (regardless of the sport button setting). In manual it did shift fast but I lost burbles. So I left it for a week to get a good feel for it, then decided to flash back using the bm3. No problems, I was able to go back to the normal stock dct.
	Appreciate 1 Bee Pee1779.00 Quote

07-11-2018, 03:40 AM	#40
Bee Pee Brigadier General 1779 Rep 4,516 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Guys, Great feedback on GTS TCU flash via BM3. Thanks. Hopefully F87Comp FW flashes won't be too far away from appearing on BM3 ?? Likewise, F8x GTS or CS DSC, Mdiff and ePAS FW flashes via BM3 would be great too. BP __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
	Appreciate 1 Volki_M216.50 Quote

07-13-2018, 08:38 PM	#41
Fuman Private First Class 24 Rep 115 Posts Drives: F87 DCT Join Date: Jun 2012 Location: Perth iTrader: (0)	I hope you are liking it overall. It should have been like this since day dot. The comfort shifting characteristic is so much better now. It was previously upshifting too late and downshifting too early at 5/6/7 - I mean there's enough torque in these motors. __________________ Current garage F87 DCT KW-HAS, and F20 N20. Previous E92 N54 FBO 100%-E85, E90 N52, E46, E21.
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07-25-2018, 04:11 PM	#43
Steveo Captain 152 Rep 706 Posts Drives: M4 Join Date: May 2009 Location: Earth iTrader: (0)	Can still flash GTS DCT with Esys, no?
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01-31-2019, 07:14 AM	#44
MZWIE Lieutenant Colonel 388 Rep 1,660 Posts Drives: M2 Join Date: Jun 2007 Location: GEORGIA iTrader: (0)	I installed the DCT transmission update to GTS. This works great. However, now the motor is very sluggish. Before the upgrade in SPORT+ the car reacted very quickly to throttle input. Now, it is very lethargic. So we traded fast throttle response in S+ for weenie response with this. Not a very good trade at all. I may have to revert back.
	Appreciate 0 Quote