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

[M4de_4This]

Originally Posted by rborane

I have been running the BM3 GTS dct flash for a while, and notice a lot of times when downshifting it is very laggy and will have a delay before it downshifts and rev matches, and inconsistent overall. In manual mode I always use mode S2. Going to try the CS DCT map and see how that is.... anyone else? Will BM3 be updating the GTS map to the latest version.

Experiencing very similar behavior as I flashed stage 2 last week and Re flashed the GTS Dct. I originally flashed with the OTS Cs and GTS Dct and it felt amazing as this was my set up for 4 Months. Then the bug hit went with Vrsf Catless , ngk 97506 gapped at .20 and stage 1 as SCH Ptsd is real. Ran a 7.82 and 8.21 60-130 on Dragy now I’m hooked and flashed staged 2 and RE flashed the GTS Dct as I wish it showed you which TCU was flashed last. 7 hits 60-130 on the same road same slope and temperatures and i hit 9.0 and 9.2. For the last week I’ve noticed the downshift in manual had some serious lag and my car is now noticeably slower. Car is used for spirited driving only so it’s frustrating.

[CoolLiving]

The flash on the bootmod3 GTS is outdated I ordered the Thor flash waiting for it to install. My friend said his car shifts so smooth with Thor.

[FastM3CT]

Also waiting for a current release with Bootmod3

Hoping to see something soon as it address some of the known issues

[rborane]

Originally Posted by M4de_4This

Experiencing very similar behavior as I flashed stage 2 last week and Re flashed the GTS Dct. I originally flashed with the OTS Cs and GTS Dct and it felt amazing as this was my set up for 4 Months. Then the bug hit went with Vrsf Catless , ngk 97506 gapped at .20 and stage 1 as SCH Ptsd is real. Ran a 7.82 and 8.21 60-130 on Dragy now I’m hooked and flashed staged 2 and RE flashed the GTS Dct as I wish it showed you which TCU was flashed last. 7 hits 60-130 on the same road same slope and temperatures and i hit 9.0 and 9.2. For the last week I’ve noticed the downshift in manual had some serious lag and my car is now noticeably slower. Car is used for spirited driving only so it’s frustrating.

Go with THOR DCT. It is the latest EU version and is night and day compared to Bootmod3 DCT.

[Smee]

i spoke to PTF yesterday they are planning on using the latest version but no ETA yet.

my issue is why spend £300 on licence and then £70 on OBD device. when Zed Coding is doing it for £120 to £150 all in with EDC

[///BMW Junkie]

Originally Posted by rborane

Go with THOR DCT. It is the latest EU version and is night and day compared to Bootmod3 DCT.

Interesting... Can you elaborate? I'm assuming you had both..

[SE7EN335]

Originally Posted by Smee

i spoke to PTF yesterday they are planning on using the latest version but no ETA yet.

my issue is why spend £300 on licence and then £70 on OBD device. when Zed Coding is doing it for £120 to £150 all in with EDC

Do you mean PTF will update their GTS transmission flash to be the latest version like what Thor has?

[Smee]

thats what they said to me but no ETA so dont expect a quick turn around

[Atrix]

Has anyone logged their Trans. Temps when running the GTS DCT tune. Although the clutches may be better of with the higher pressures preventing slip, the oil pump will have an additional load and so will the oil. I ve noted 90 deg Celsius (195 F) normal driving Transmission Temps. Seems a bit high. 135 deg is supposedly the top end and I heard 160 will put the car into limp mode.

[Twistm4]

Originally Posted by Atrix

Has anyone logged their Trans. Temps when running the GTS DCT tune. Although the clutches may be better of with the higher pressures preventing slip, the oil pump will have an additional load and so will the oil. I ve noted 90 deg Celsius (195 F) normal driving Transmission Temps. Seems a bit high. 135 deg is supposedly the top end and I heard 160 will put the car into limp mode.

200 is normal. However, I have had 2 trans temps too hot codes while doing drag racing. usually prep burnouts, staging etc. Switched to CS trans tune to see if it helped and so far so good.

People say the hardwares are the same but I thought I was pretty sure GTS has thicker clutches and an external OIL cooler for the clutches.

[blkcow]

Originally Posted by rborane

Go with THOR DCT. It is the latest EU version and is night and day compared to Bootmod3 DCT.

How does the MHD compare to Thor and the BM3?

[papasmurf_m3]

Originally Posted by Twistm4

200 is normal. However, I have had 2 trans temps too hot codes while doing drag racing. usually prep burnouts, staging etc. Switched to CS trans tune to see if it helped and so far so good.

People say the hardwares are the same but I thought I was pretty sure GTS has thicker clutches and an external OIL cooler for the clutches.

Are you the same guy in the F80 facebook group that had issues with GTS trans flash because you drive the car harder then 99% of the F8X owners.

I'm asking because, he mentioned the DCT clutches thicker and has extra cooler to deal with the heat.

I think CS is better because, it's closer to our cars. I don't think it has the thicker clutches or the extra dct cooler.


Also, your car is still slower? Even after the CS flash and more power? Sounds like so many variables. Are you making more power? Does it feel faster?

[papasmurf_m3]

Originally Posted by M4de_4This

Experiencing very similar behavior as I flashed stage 2 last week and Re flashed the GTS Dct. I originally flashed with the OTS Cs and GTS Dct and it felt amazing as this was my set up for 4 Months. Then the bug hit went with Vrsf Catless , ngk 97506 gapped at .20 and stage 1 as SCH Ptsd is real. Ran a 7.82 and 8.21 60-130 on Dragy now I’m hooked and flashed staged 2 and RE flashed the GTS Dct as I wish it showed you which TCU was flashed last. 7 hits 60-130 on the same road same slope and temperatures and i hit 9.0 and 9.2. For the last week I’ve noticed the downshift in manual had some serious lag and my car is now noticeably slower. Car is used for spirited driving only so it’s frustrating.

Trans temps getting too hot? Or maybe could you have glazed the DCT clutches from too many burnouts or high speed runs in higher gears. This is puzzling indeed!

[Twistm4]

Originally Posted by papasmurf_m3

Are you the same guy in the F80 facebook group that had issues with GTS trans flash because you drive the car harder then 99% of the F8X owners.

I'm asking because, he mentioned the DCT clutches thicker and has extra cooler to deal with the heat.

I think CS is better because, it's closer to our cars. I don't think it has the thicker clutches or the extra dct cooler.


Also, your car is still slower? Even after the CS flash and more power? Sounds like so many variables. Are you making more power? Does it feel faster?

Probably. Who knows. But everything was fine for me on the CS tune until... had first dig race and OH MY LORD the CS LC is TERRIBLE. It cuts power out during 1st and second gear to control wheel spin and is super slow off the line. So I had to swap back to GTS and deal with the high temps. Idk what to do moving forward. Probably should do a service and contact Alex for a custom variant of it. Would be just OH SO GREAT if companies could crack the TCU and offer custom trans tunes to fix all this. The s55 trans tuning is light years behind what, for example, the RS cars are able to do (mqbs).

Also I think I agree with you that the CS trans tune is better for most owners. Unless you dig race hardcore like I do stick with the CS for sure. It is much easier on the car. And seems to shift Faster but Softer. GTS feels like youre getting donkey punched in the rear end everytime you come on and off the throttle or shift. CS is smooth and quick like the DSGs.

[rborane]

Originally Posted by Twistm4

Probably. Who knows. But everything was fine for me on the CS tune until... had first dig race and OH MY LORD the CS LC is TERRIBLE. It cuts power out during 1st and second gear to control wheel spin and is super slow off the line. So I had to swap back to GTS and deal with the high temps. Idk what to do moving forward. Probably should do a service and contact Alex for a custom variant of it. Would be just OH SO GREAT if companies could crack the TCU and offer custom trans tunes to fix all this. The s55 trans tuning is light years behind what, for example, the RS cars are able to do (mqbs).

Also I think I agree with you that the CS trans tune is better for most owners. Unless you dig race hardcore like I do stick with the CS for sure. It is much easier on the car. And seems to shift Faster but Softer. GTS feels like youre getting donkey punched in the rear end everytime you come on and off the throttle or shift. CS is smooth and quick like the DSGs.

Are you using the CS trans tune on MHD?

[Atrix]

Originally Posted by Twistm4

200 is normal. However, I have had 2 trans temps too hot codes while doing drag racing. usually prep burnouts, staging etc. Switched to CS trans tune to see if it helped and so far so good.

People say the hardwares are the same but I thought I was pretty sure GTS has thicker clutches and an external OIL cooler for the clutches.

Thanks for the feedback. I am planning on changing the Oil and Filters which requires a top up fill while the car is running but temps need to be under 40 deg Celsius. My Trans. seems to heat up quickly, but thats under load. Maybe it wont be that bad with no load.

I am running the MHD GTS DCT tune and its definitely nice. Smooth shifts at low speeds and no jerky engagement between R and D.

My only issue is that when I tried the CS DCT tune, MHD gave me a fault code saying DCT not found. Need to email MHD and find out why.

[Mike.]

Alex flashed the GTS Software last night. Shifts are crisp and the car doesn't get confused.

[dcpatters]

Originally Posted by Mike.

Alex flashed the GTS Software last night. Shifts are crisp and the car doesn't get confused.

Is his tune unique or same of the others discussed in this thread?

[Mike.]

Originally Posted by dcpatters

Is his tune unique or same of the others discussed in this thread?

I believe it is the most up to date version of the GTS flash.

He could answer better than I can on this, though.

[Twistm4]

Originally Posted by rborane

Are you using the CS trans tune on MHD?

I was yes

[SE7EN335]

That’s why I firmly believe you must do a DCT fluid service every 50-60k miles if you are running the GTS transmission flash. The GTS flash puts a lot more pressure on the clutches so the oil is broken down faster. When on stock dct tune, trans temps are around 83-85 Celsius. When on Thor GTS dct tune, its around 88-91Celsius.

[Twistm4]

Originally Posted by SE7EN335

That’s why I firmly believe you must do a DCT fluid service every 50-60k miles if you are running the GTS transmission flash. The GTS flash puts a lot more pressure on the clutches so the oil is broken down faster. When on stock dct tune, trans temps are around 83-85 Celsius. When on Thor GTS dct tune, its around 88-91Celsius.

I want to but bmw is trying to charge me 2600$ for a service. F THAT. I bought 6 liters Im just gonna swap the fluid myself. Not even gonna change the filters.

TBH it's cheaper to just run a DCT into the ground and buy a new USED one and swap yourself than to have BMW service one. That is utterly ridiculious. I find them all the time on FB with low miles for 900-1500$. A guy just posted one without a mechatronic unit for 500$... Like that's not bad at all. I may just buy one to keep on hand for when this one breaks.