GTS Steering + Diff

[JrStig]

Originally Posted by deeldoo

Coded this on.

This is how car should have come from factory, if you don't do this you are missing out.

I have Bootmod3 and Bimmercode as well as a Veapeak Adaptor

How do i code the GTS steering on ? I already have the GTS trans coded since it came with bootmod3

[deeldoo]

Originally Posted by DeathBear

Anyone else experiencing this throttle response? Was about ready to pull the trigger on the this but this negative feedback on the throttle response has me concern.

Thanks!

Funny enough i took the car out to some backroads today.

The throttle response is now insane, the car before would hesitate when pinning it as the diff was trying to figure out how to deal with the power.

Now it feels like I am launching from a roll. I am not sure how the throttle response got neutered in this case.

I suspect that if coded on by someone else there may have been an update done, i.e. later year models have a more linear torque curve which can be misconstrued with a negative throttle response.

I have read this happen multiple times with remote coding but i honestly don't know.

For me the car became unleashed, throttle steering now is a work of art, any hint of understeer in a sweeper you can just lay into the throttle and the back end comes swinging around.

The car is so changed that my 62 year old father who doesn't know anything about cars + my sister who both had been in my car prior to coding mentioned:

"why is the back swinging, this car feels weird, did you do something to it?"

"Be careful, it feels kind of weird and twitchy"

Then after i mentioned i had the coding done, so this isn't a placebo from my end, we weren't even talking about the car and they felt the need to talk about how it felt weird.

Truthfully super excited again about owning it, feels like day 1.

[therealkenc]

Originally Posted by deeldoo

The throttle response is now insane, the car before would hesitate when pinning it as the diff was trying to figure out how to deal with the power.

This is what I'm feeling from my car now. When I pin it, even when on the freeway and downshifting to 3rd or 4th gear (in Sport+), it stays in the same lower RPM range for a second, and then the RPM jumps to 5k+, as if the car finally figured out what to do with the input.

Originally Posted by deeldoo

I suspect that if coded on by someone else there may have been an update done, i.e. later year models have a more linear torque curve which can be misconstrued with a negative throttle response.

I have read this happen multiple times with remote coding but i honestly don't know.

Hm, what is updated in such an instance, specifically? So that I can go back to the coder and ask if that was done. Would a non-dealer coder do any major software updates beyond what's being requested?

Originally Posted by deeldoo

For me the car became unleashed, throttle steering now is a work of art, any hint of understeer in a sweeper you can just lay into the throttle and the back end comes swinging around.

The car is so changed that my 62 year old father who doesn't know anything about cars + my sister who both had been in my car prior to coding mentioned:

"why is the back swinging, this car feels weird, did you do something to it?"

"Be careful, it feels kind of weird and twitchy"

Then after i mentioned i had the coding done, so this isn't a placebo from my end, we weren't even talking about the car and they felt the need to talk about how it felt weird.

Truthfully super excited again about owning it, feels like day 1.

Congrats on having your car's abilities unleashed, must feel great. Funny that you mention your car feeling kinda weird and twitchy to your family - one reason I wanted to code for GTS Diff and CS EDC was that I read accounts of cars becoming less twitchy. There must be a significant level of subjectivity in perceptions (and preferences). Does GTS Diff make the car less or more twitchy in the rear? Is twitchy good or bad? Haha

[deeldoo]

Originally Posted by therealkenc

This is what I'm feeling from my car now. When I pin it, even when on the freeway and downshifting to 3rd or 4th gear (in Sport+), it stays in the same lower RPM range for a second, and then the RPM jumps to 5k+, as if the car finally figured out what to do with the input.

Hm, what is updated in such an instance, specifically? So that I can go back to the coder and ask if that was done. Would a non-dealer coder do any major software updates beyond what's being requested?

Congrats on having your car's abilities unleashed, must feel great. Funny that you mention your car feeling kinda weird and twitchy to your family - one reason I wanted to code for GTS Diff and CS EDC was that I read accounts of cars becoming less twitchy. There must be a significant level of subjectivity in perceptions (and preferences). Does GTS Diff make the car less or more twitchy in the rear? Is twitchy good or bad? Haha

So if remote coding is done i have heard of multiple instances of needing certain updates to bring the car into a position where it could have the coding done, i.e. firmware to a later year. If yours was an early model car it may have been done. I think the best way to check is either bring it into a dealer if you are out of warranty and don't care or ask the person if they coded it or had to update the car before flashing. Also please try resetting your adaptations.

In regards to feel:

This is coming from 2 people who don't understand cars or sensation though. The car is definitely not "twitchy".

What has changed is that it has become direct instead of vague, i.e. a certain amount of steering angle or throttle in a corner does x amount of movement.

Previously it was like give it 15% gas, feel a bunch of slip, feel the diff all confused, and then when steering the dead zone would show up and you just never knew how much to steer. It was not confidence inspiring, as a driver i don't like vagueness.

The car is now simply very direct, and hunts for traction, can power out of corners, and the rear end finally feels like it is stuck to my gas pedal so i can do with it what i please.

[therealkenc]

Originally Posted by deeldoo

So if remote coding is done i have heard of multiple instances of needing certain updates to bring the car into a position where it could have the coding done, i.e. firmware to a later year. If yours was an early model car it may have been done. I think the best way to check is either bring it into a dealer if you are out of warranty and don't care or ask the person if they coded it or had to update the car before flashing. Also please try resetting your adaptations.

Thanks, mine is an LCI (2018) so I'm guessing it falls into the later year category. Coder said he did nothing except code for the specific items, but let me double check. If things don't improve in the near future, I'll reset the adaptations, then see if I should hit up another coder, or get the thor app like you did

Originally Posted by deeldoo

The car is now simply very direct, and hunts for traction, can power out of corners, and the rear end finally feels like it is stuck to my gas pedal so i can do with it what i please.

Just what I'm looking for My car felt closer to this description in terms of it being stuck to the gas pedal. Have fun with yours!

[HyeM3]

This is one of my favorite things I've done too. There is definitely that directness you describe where it doesn't feel confused and when you want to rotate it more just give it a little more throttle. The way I would describe it is the car just feels so much more predictable around corners and less confused as you said. One main thing I've noticed is before when doing a pull in a lower gear in a straight line the back end would kick out whenever you spin the tires and the car would want to get completely sideways on you. But now whenever you spin the tires the car stays completely straight it's amazing!

[deeldoo]

Originally Posted by HyeM3

This is one of my favorite things I've done too. There is definitely that directness you describe where it doesn't feel confused and when you want to rotate it more just give it a little more throttle. The way I would describe it is the car just feels so much more predictable around corners and less confused as you said. One main thing I've noticed is before when doing a pull in a lower gear in a straight line the back end would kick out whenever you spin the tires and the car would want to get completely sideways on you. But now whenever you spin the tires the car stays completely straight it's amazing!

I have not tried this yet, if so i would be super happy, rolling burnouts ahhaah.

I was actually scared to pin the car in lower gears previously due to the car getting sideways.

[stealthm4f8x]

What more direct/raw ? CS or GTS steering? I don't care about tightness I just want it to feel the least artificial as possible