Why wasn't GTS transmission standard on all F8x?

[_ts]

I've noticed numerous members on this forum mentioning that the GTS transmission flash by kubax86 offers only benefits without any drawbacks. Why didn't BMW implement this as standard for all F8x models?

I get that MDM exists because of liability considerations, and the choices around EDC/power steering cater to casual drivers who might not prefer a rigid suspension or steering. But why were the transmission and differential coding, which seemingly have only advantages, limited to the GTS models?

[hellokitty]

Because the GTS DCT, Diff, MDM are specifically tailored and tested using the GTS engine mapping, not standard or competition F8X engine mapping.

If you want the best configuration, you must pair all of the GTS drivetrain mapping WITH the GTS engine map.

[Car-Addicted]

Originally Posted by hellokitty

If you want the best configuration, you must pair all of the GTS drivetrain mapping WITH the GTS engine map.

A coder would be better to comment on this but..... The GTS is water injected and this system is controlled but a number of sensors. If the sensors on a non GTS engine don't return the expected result it could adversely effect performance.

I'm running kubax86's GTS drivetrain mapping on my M4 CS and it has made a significant improvement.

[FrankMstein]

Originally Posted by Car-Addicted

A coder would be better to comment on this but..... The GTS is water injected and this system is controlled but a number of sensors. If the sensors on a non GTS engine don't return the expected result it could adversely effect performance.

I'm running kubax86's GTS drivetrain mapping on my M4 CS and it has made a significant improvement.

What did it help?

[hellokitty]

Originally Posted by Car-Addicted

A coder would be better to comment on this but..... The GTS is water injected and this system is controlled but a number of sensors. If the sensors on a non GTS engine don't return the expected result it could adversely effect performance.

I'm running kubax86's GTS drivetrain mapping on my M4 CS and it has made a significant improvement.

GTS maps disable water injection. The GTS map is one of the least aggressive maps so cooling should not be an issue even on track.

With that said, always upgrade your heat exchanger and use Redline Water Wetter for best thermal efficiency.

[hellokitty]

Originally Posted by FrankMstein

What did it help?

Smoother and faster gear shifts, less kangaroo effect when starting off in 1st (i.e., reduces buckling).

It's just a better user experience for the DCT car.

[G35POPPEDMYCHERRY]

to create more products and thus comparisons and thus reasons to make things cost more.


bmw doesn't give a fuck about whether they make the ultimate driving machine. its all marketing. They make amazing cars. but their slogan like all other companies is $$$$$$$$$

[Car-Addicted]

Originally Posted by FrankMstein

What did it help?

I had a issue with light throttle acceleration and shift smoothness. I want to drive fast and not drift. Improving that alone was worth the flash. I can also use a more trans shift speed due to increased shift smoothness.

[Car-Addicted]

Originally Posted by hellokitty

GTS maps disable water injection.

I think we have a communication problem here. I was speaking of the factory GTS map and not a GTS remap for non GTS cars.

[Car-Addicted]

Originally Posted by G35POPPEDMYCHERRY

bmw doesn't give a fuck about whether they make the ultimate driving machine. its all marketing.

That's cold, but I'm starting to agree. They have caught "EVitis" A common disease where you know everyone wants a electric car even if they don't.

[FrankMstein]

Originally Posted by hellokitty

Smoother and faster gear shifts, less kangaroo effect when starting off in 1st (i.e., reduces buckling).

It's just a better user experience for the DCT car.

I only noticed an improvement in bucking.

[dawei213]

Originally Posted by hellokitty

Smoother and faster gear shifts, less kangaroo effect when starting off in 1st (i.e., reduces buckling).

It's just a better user experience for the DCT car.

You have the kangaroo (buckling) effect when starting off in 1st in a DCT? I thought that's only an issue in manual cars. Think this mapping would help with that in a manual car?

[_ts]

Originally Posted by hellokitty

Because the GTS DCT, Diff, MDM are specifically tailored and tested using the GTS engine mapping, not standard or competition F8X engine mapping.

If you want the best configuration, you must pair all of the GTS drivetrain mapping WITH the GTS engine map.

Your reply doesn't really make sense. Everyone is reporting that the GTS DTC transmission flash is superior to the normal flash even on base or ZCP cars...

[_ts]

Originally Posted by G35POPPEDMYCHERRY

to create more products and thus comparisons and thus reasons to make things cost more.


bmw doesn't give a fuck about whether they make the ultimate driving machine. its all marketing. They make amazing cars. but their slogan like all other companies is $$$$$$$$$

This honestly seems like the most likely thing.

[Car-Addicted]

Originally Posted by dawei213

You have the kangaroo (buckling) effect when starting off in 1st in a DCT? I thought that's only an issue in manual cars. Think this mapping would help with that in a manual car?

First try this tip. If starting out from a dead stop. Lightly tap the accelerator pedal. When you accelerator you will notice a difference in clutch engagement.

[dawei213]

Originally Posted by Car-Addicted

First try this tip. If starting out from a dead stop. Lightly tap the accelerator pedal. When you accelerator you will notice a difference in clutch engagement.

It's only an issue on occasion only in Sports/Sports Plus mode, after engagement and if the car becomes unsettled from engagement to 2k rpm when it goes over bumpy roads. The only way to resolve it is to foot off the gas, wait until the car is settled and then give it gas again. It's weird.

[hellokitty]

Originally Posted by _ts

Your reply doesn't really make sense. Everyone is reporting that the GTS DTC transmission flash is superior to the normal flash even on base or ZCP cars...

It is superior but like I said, the GTS flash is meant to be paired up with GTS engine mapping for optimal performance. If you are using GTS DCT with stock mapping, you are not getting the most out of it.

[hellokitty]

Originally Posted by dawei213

You have the kangaroo (buckling) effect when starting off in 1st in a DCT? I thought that's only an issue in manual cars. Think this mapping would help with that in a manual car?

The GTS mapping is for DCT cars. I don’t think the GTS ever came with a manual option, only DCT.

[hellokitty]

Originally Posted by FrankMstein

I only noticed an improvement in bucking.

Are you running the GTS engine tune?

One thing to keep in mind is that the DCT is very sensitive to engine torque levels. That’s why I said the GTS DCT mapping is designed for the GTS engine mapping since target load for the GTS tune is different compared to stock, ZCP or CS cars.

If you are pushing less torque than the GTS DCT map is expecting, then it may result in slower or spongy shifts.

I’ve beat these settings to death on xHP and it’s hard to nail down the perfect calibration. Just look at the xHP discussion thread where people play with their torque reduction and torque punch settings.

[HotRodM4]

Originally Posted by G35POPPEDMYCHERRY

to create more products and thus comparisons and thus reasons to make things cost more.


bmw doesn't give a fuck about whether they make the ultimate driving machine. its all marketing. They make amazing cars. but their slogan like all other companies is $$$$$$$$$

Exactly. How many trims of an M do we really need? M, M comp, M CS, M GTS, M CSL 😂 It’s blatant.

[tgb1974]

Originally Posted by hellokitty

GTS maps disable water injection. The GTS map is one of the least aggressive maps so cooling should not be an issue even on track.

With that said, always upgrade your heat exchanger and use Redline Water Wetter for best thermal efficiency.

I had the GTS coding done on my F83, and I have noticed that the engine seems to get hotter more quickly. It reaches operating temperature (around/just past the hash mark to the left of 250) after a relative short amount of time of just plain ol' city driving. It has not overheated or anything like that.

Is that because the GTS map disables water injection? Sorry if this is a basic question, but I was concerned enough about it that I took it in to the shop (an indy) to make sure there wasn't an engine cooling problem developing. Thanks in advance.

[hellokitty]

Originally Posted by tgb1974

I had the GTS coding done on my F83, and I have noticed that the engine seems to get hotter more quickly. It reaches operating temperature (around/just past the hash mark to the left of 250) after a relative short amount of time of just plain ol' city driving. It has not overheated or anything like that.

Is that because the GTS map disables water injection? Sorry if this is a basic question, but I was concerned enough about it that I took it in to the shop (an indy) to make sure there wasn't an engine cooling problem developing. Thanks in advance.

Your engine oil temperature should be 226f under normal operations. Sport+ will bring this target down. It seems like your temp is normal.

With that said, the GTS tune isn't very aggressive relative to what's out there these days, so you should not be getting any overheating issues.

I always recommend people use Redline Water Wetter for maximum thermal efficiency. Order 2 bottles and pour 1 in the engine coolant tank and 1 in the charge heat exchanger tank.