Throttle response issue - interesting log

[aus335iguy]

If it's the same ones, but judging by the description in his thread, it sounds like them. An initial dead spot should be able to be overcome with just torque request really. Pedal is the input request, torque request is what you want from it at the wheels. A ridiculous amount of torque management goes on in between.

Yes, I cut the stock DCT pedal correction values in half to test while using the 1M torque request tables, which are much more tame than 335is. Loosen up the input side while keeping the stock output matrix and you're asking for/getting more torque more quickly. 1st gear is so tall on DCT, can go from dull response to hold on for your life in a small margin lol

The main benefit with freeing up the input side (pedal) is if the motor itself does respond more directly and MTs will probably have the biggest benefit from that. It's just one very small piece of the puzzle though.

Im happy to hear what you would advise( i believe you have a DCT). I want the throttle response to be more like a standard linked throttle if possible. Once you’ve driven these things for a while you forget what its like to drive a normal car.

 

[RSL]

I'd be interested to see what new table address they're talking about here. There's a handful of throttle tables already available and one in particular, I forget the name but it's a single value and does numb down response if you set it too low (I think cobb used to do this). I'll have to log my car when I get a chance and see if this is present.

The ones I'm referring to are pedal value offsets/factors/timers, which impact everything PV is an input for. I'm assuming the same ones they are releasing. Most noticeable diff between them is MT base corr is zeroed out on 1M and non-1M MT has a buffer, but there are others. There are a lot in that area for different conditions/trannies/modes.

I'm not sure any of them were in ATR, but it's been a while. Most I've seen aren't single cell though, except for timers.

Im happy to hear what you would advise( i believe you have a DCT). I want the throttle response to be more like a standard linked throttle if possible. Once you’ve driven these things for a while you forget what its like to drive a normal car.

Yes, DCT here. Are you on an unlocked tune? Dead spot doesn't necessarily need to be an input or request issue, but either might alleviate/mask it.

I'll go to a stock map and play with it some more to see if I can get some settings nailed down for DCT.

 

[Jake@MHD]

IVe since had confirmation that the DCT cars dont have zero’d figures in the table. Once released this will be huge.

Can you have him fwd them to Marial or I? We'll get the githubs xdf's updated asap.

@nahor Do you have a RPM limit of 6800 with the switch activated and signal 2 cable disconnected?

I did at first, you just have to change the rev limit for gear 0, as with the cable disconnected, the car will always think that’s the gear it’s in. I’d also recommend you equal out your load target for all gears. I haven’t tested which section of that table the car follows with the clutch switch disconnected, but obviously without gear detection it won’t use them all.

Don't do this. Leave the clutch switch plugged in and use MHD shift-bog fix.

 

[works]

Don't do this. Leave the clutch switch plugged in and use MHD shift-bog fix.

Thanks for the warning, but can you go a bit into details as of why not?

I'm already using the shift-bog fix and my throttle lag, as can be seen from the logs on the first page, is abysmal. I'm REALLY hoping that this latest discovery is actually something new and I can get closer to a wired throttle engine response. A behavior that is it currently exhibited when the clutch is pressed down.

 

[aus335iguy]

@jyamona Apparently the people who’ve found this are already in touch with MHD. It sounds as if it’s known by other people as well so I’m sure it’ll end up in the XDF though I don’t know if the launch target RPM I’ve been waiting for is the same
@RSL I’d appreciate the effort if you have the time mate !

 

[Jake@MHD]

I sent launch rpm to Momir, not sure if that's what you saw or not. But that's going to be extra special

 

[aus335iguy]

I sent launch rpm to Momir, not sure if that's what you saw or not. But that's going to be extra special

I remember you tested that it was working with a number of people. I dont recall if it went anywhere after that.
Just FYI People have cracked the the DSC module (amalgam of M3 and 335i DSCs in fact) and are running reduced intervention routines on road and race cars. With upgraded m3 rear ends(or ADE 8.8) M3 DCT shift adjustments via upgraded GWS, fine tuned DSC traction routines and adjustable target RPM we may yet see an n54 DCT into the 8s in the right conditions. Might start a new thread as this is now off topic

 

[Jake@MHD]

I was talking about 6MT but yes DCT too

 

[works]

Just FYI People have cracked the the DSC module (amalgam of M3 and 335i DSCs in fact) and are running reduced intervention routines on road and race cars.

Hold up, can we get the M3 M-DCT flashed to *35i's or a tuned special that's not as intervention heavy as the DCT is now?

 

[works]

Discovery thread is up:

N54 Throttle Sensitivity Discovery thread

N54 Throttle Sensitivity Discovery thread

www.e90post.com

 

[aus335iguy]

Hold up, can we get the M3 M-DCT flashed to *35i's or a tuned special that's not as intervention heavy as the DCT is now?

M3 DCT and DSC on a 335i. No one has ever tuned a DCT as far as i know, they just flash various BMW file versions. I was mistaken about the DSC its a straight M3 as well. Sorry if that caused any confusion.
Take a look at this thread for details

N54 DCT w/M3 Conversion

::DISCLAIMER:: This conversion requires expert knowledge of module coding and flashing. It will include the requirements to spoof an M3 Vehicle Order inside NCS Expert to allow NCS Expert to code certain modules correctly without modifying the actual Vechicle Order. If you use NCS Expert to...

bmw.spoolstreet.com

 

[gmx]

I remember you tested that it was working with a number of people. I dont recall if it went anywhere after that.
Just FYI People have cracked the the DSC module (amalgam of M3 and 335i DSCs in fact) and are running reduced intervention routines on road and race cars. With upgraded m3 rear ends(or ADE 8.8) M3 DCT shift adjustments via upgraded GWS, fine tuned DSC traction routines and adjustable target RPM we may yet see an n54 DCT into the 8s in the right conditions. Might start a new thread as this is now off topic

Please, this the Continental unit that also controls ABS? Circuit/track cars looking to get more out of R-specs under braking would benefit a lot from this.
The 1M/M3 programming is already different from factory just by looking at the hex dump. Going off feel/observation. The 1M (euro or whatever) is more intrusive than the M3. Figures.
Anyway, about the diffs concerning positive traction (acceleration), I don't believe the factory diffs work well at all with any sort of TC. It needs a little wheel spin to actually build pressure and lockup. If anyone manages to lap faster on custom MDM mapping, I'll eat my words.

 

[aus335iguy]

I interpreted a recent post about DSC flashing the wrong way. All of the units, M3 1M and 335i are the sme electrically and so you can flash M3 on 335 and vice versa(apparently)
There’s no custom calibration, i mis read it.

 

[works]

OT: but if we now have DSC ON/DTC/OFF and we could get DSC ON/MDM/OFF I'd be so happy. Not sure if the MDM mode from M3 takes into calculation the LSD or not.

 

[NoQuarter]

updated: https://www.e90post.com/forums/showthread.php?t=1610143

 

[works]

And it looks like the new discovery will be made either a tickbox or a slider option in MHD. Now that's a win in my book.

 

[Kommodore]

This is fantastic. I've been complaining about it for a long time to the people that have tuned for me and there was never really an answer. I'm glad I wasn't crazy.