[simsimma120]

Originally Posted by jpsimon

Yeah you need to flash again

I figured since the car is not connected to XHP via wifi or Bluetooth unless you have the adapter plugged in. Thanks. Just did it

[CadHater]

I need to play with mine some more and try different settings. Stage 3 had some overly aggressive shifts a few times. In stage 2 I loved it. The shifts are snappier and the exhaust sound changed.

[rogurat]

Originally Posted by rogurat

Unless I'm dumb, I am pretty sure it launches in 2nd but has this weird like delay thing.

I'll take a video today. It's weird, my car is not stock and I think I need to adjust settings. I'm just not good at that, and would love help tuning correctly. I don't know certain meanings and stuff.

Armaspeed Intake, Full Remus Exhaust, Racechip, (downpipes *not installed yet but very soon) are all pushing the car a bit more in terms of HP. So the launch torque or something is weird. Doesn't launch good.

OKAY.

I fixed the weird power shutdown that happened on a launch by doing a few things.

1. Went to Stage 3 from Stage 2, not sure if this made the difference, I doubt it.

2. I set custom launch control torque to -10% and torque scaling after launch to -7% (I have no idea what the fuck any of this means, can someone explain, but I tried it anyway, my theory was I had too much torque cause my car isn't stock, so I lowered it.)

If I had to assume my car was somewhere between 600-650HP, would I want to increase those %'s instead of decrease them?

My car actually launches now, but with RWD I got a 3.8 something, and that HAS to be wrong, and since it's my first time using the dragy, I think I'm just a total fng.

[BMWM4CX]

Originally Posted by jpsimon

I'm doing a good amount of driving tomorrow, after that I'll know if I want to tweak the tq. reduction further.

How did you end up getting on with the torque reduction tweaks?

I've run Stage 3 the last couple days, with various torque reduction values up to +30%, but I still can't help thinking that it doesn't feel right on the xDrive.

The WOT 2->3 and 4->5 shifts especially, were SUPER harsh and to be honest, they're not overly great at slow speeds either.

I've reverted back to Stage 2 for the time being.

[brad65ford]

Originally Posted by BMWM4CX

How did you end up getting on with the torque reduction tweaks?

I've run Stage 3 the last couple days, with various torque reduction values up to +30%, but I still can't help thinking that it doesn't feel right on the xDrive.

The WOT 2->3 and 4->5 shifts especially, were SUPER harsh and to be honest, they're not overly great at slow speeds either.

I've reverted back to Stage 2 for the time being.

Curious, do you have a DME flash or JB4? Wondering how much torque values can be removed or are tied in with the DME/ECU with the trans tuning.

[BMWM4CX]

Originally Posted by brad65ford

Curious, do you have a DME flash or JB4? Wondering how much torque values can be removed or are tied in with the DME/ECU with the trans tuning.

I have a custom DME tune mate. When I use the Stage 3 xHP, each upshift lurches the car forward and it feels so strange. I'm not a fan of it to say the least.

[McLaren720s]

I'm going to try Stage 3 with some torque upshift reductions in every gear and see if I can smooth out the shifts a bit.

My concern here is 2-fold:
1. How does Stage 3 in current form affect long term transmission / drive train reliability? Because there is so much shock sent when shifting gears that it's hard to believe it won't somehow affect reliability

2. The car seems to break traction due to the transmission shock even with a stock XDrive. This is not something we want.

[jpsimon]

This morning I went and upped the reduction to 25% for all the gears (still stage 3).

[BMWM4CX]

Originally Posted by McLaren720s

I'm going to try Stage 3 with some torque upshift reductions in every gear and see if I can smooth out the shifts a bit.

My concern here is 2-fold:
1. How does Stage 3 in current form affect long term transmission / drive train reliability? Because there is so much shock sent when shifting gears that it's hard to believe it won't somehow affect reliability

2. The car seems to break traction due to the transmission shock even with a stock XDrive. This is not something we want.

I brought these points up with them early on and they just dismissed me saying 'none of the tuners using the initial release complained about anything', which I do find funny as none of the tuners seemed to find the issue where 1st gear could not be selected anymore.

I was just given the line of 'if you don't like it, use Stage 2'.

[brad65ford]

Originally Posted by BMWM4CX

I have a custom DME tune mate. When I use the Stage 3 xHP, each upshift lurches the car forward and it feels so strange. I'm not a fan of it to say the least.

All good, while its custom does that mean torque limits where removed? Again I'm not sure how the DME/ECU ties in with the torque values with the TCU but if its like other manufactures I know its related.

[djpapeleta]

Has anyone ever gotten a collision has been detected when launching. I have the tcu and state 2 tune with bm3 and after launching I got that warning. It went away after 5 minutes of driving but man I wonder if the violent launch make the car think it got in a accident lol.

[jpsimon]

25% feels pretty good to me for stage 3.

[McLaren720s]

Originally Posted by jpsimon

25% feels pretty good to me for stage 3.

25% reduction in upshift torque across all gears?

[jpsimon]

Originally Posted by McLaren720s

25% reduction in upshift torque across all gears?

Actually, I did 20% not 25% (didn't have enough coffee yet when I wrote this earlier). I only drove around for a little though, so need more seat time.

[McLaren720s]

I tried 20% tq reduction and it didn't really seem to do much.

[Mcc420]

Originally Posted by djpapeleta

Has anyone ever gotten a collision has been detected when launching. I have the tcu and state 2 tune with bm3 and after launching I got that warning. It went away after 5 minutes of driving but man I wonder if the violent launch make the car think it got in a accident lol.

I've gotten it with my f90 several times on hard launches. I managed a 2.56 0-60 with the g80.

[djpapeleta]

Originally Posted by Mcc420

I've gotten it with my f90 several times on hard launches. I managed a 2.56 0-60 with the g80.

Go to know. Scared the crap out of me. Thought I broke my engine or transmission.

[BMWM4CX]

Originally Posted by McLaren720s

I tried 20% tq reduction and it didn't really seem to do much.

Make sure your custom settings actually saved. Normally I have to set my custom values at least twice for them to save.

Although saying this, I set my torque red. values to +30% and there was no discernible difference.

[jpsimon]

Yeah so after driving some more, I don't know if it really did that much. If anything it made it lurch more when shifting. At lower speeds / less throttle input it feels good. But as soon as you go WOT and it's shifting under a lot of load it doesn't feel right. I just dropped it to stage 2 and did -50% across the board for now. I really want something in between how stage 2 and 3 feel.

[BMWM4CX]

Originally Posted by jpsimon

Yeah so after driving some more, I don't know if it really did that much. If anything it made it lurch more when shifting. At lower speeds / less throttle input it feels good. But as soon as you go WOT and it's shifting under a lot of load it doesn't feel right. I just dropped it to stage 2 and did -50% across the board for now. I really want something in between how stage 2 and 3 feel.

I can attest to what you've described. I found exactly the same results.

Yeah Stage 2 is a little too tame and Stage 3, especially on the xDrive, is just too much. What the sweet spot is though, I don't know!

Have you driven much with Stage 2 and the -50% reduction? How's it feel?

[brad65ford]

Hi guys, I don't have XHP tcu tune yet (might not need it) for our G80 m3 but I did on my F90 m5 and really like it a lot. Noticing all of these different settings and different results everyone is commenting on and assuming some have DME unlocks and others have JB4 or similar.

While I'm waiting on my DME to come back and one things our tuner requested of Femto was to remove torque limits. Not sure how many of you have or haven't requested this. Seems they only do it per request its not the norm for the to do. It also maybe directly related and conflicting torque limit values when shifting for some. I asked Femto what is the differences are and here is what they stated (below). Also I asked about this trans software and they had mixed results. Personally I think its paramount to remove the torque values in the DME and its possible this tcu flashing tool may help or make things worse if you are doing tcu software on top of it. One things for sure, I have a feeling if a tuner requests this is ideal to tune with them lol.

1. No tq limiter removal, no TCU patch = you can NOT reach tq values higher than factory preset value, you need to "scale" maps in order to "fool" ECU, then you can reach higher tq values while ECU will still be thinking it's in the safe limits
2. No tq limiter removal, TCU patch = you can reach higher tq values without fooling ECU
3. tq limiter removal, no TCU patch = you can reach higher tq values without fooling ECU, without TCU patch
4. tq limiter removal, tcu patch = ??? some of the flasher devs told us that this may result in some kind of quirks

[rmeitz167]

Originally Posted by brad65ford

Hi guys, I don't have XHP tcu tune yet (might not need it) for our G80 m3 but I did on my F90 m5 and really like it a lot. Noticing all of these different settings and different results everyone is commenting on and assuming some have DME unlocks and others have JB4 or similar.

While I'm waiting on my DME to come back and one things our tuner requested of Femto was to remove torque limits. Not sure how many of you have or haven't requested this. Seems they only do it per request its not the norm for the to do. It also maybe directly related and conflicting torque limit values when shifting for some. I asked Femto what is the differences are and here is what they stated (below). Also I asked about this trans software and they had mixed results. Personally I think its paramount to remove the torque values in the DME and its possible this tcu flashing tool may help or make things worse if you are doing tcu software on top of it. One things for sure, I have a feeling if a tuner requests this is ideal to tune with them lol.

1. No tq limiter removal, no TCU patch = you can NOT reach tq values higher than factory preset value, you need to "scale" maps in order to "fool" ECU, then you can reach higher tq values while ECU will still be thinking it's in the safe limits
2. No tq limiter removal, TCU patch = you can reach higher tq values without fooling ECU
3. tq limiter removal, no TCU patch = you can reach higher tq values without fooling ECU, without TCU patch
4. tq limiter removal, tcu patch = ??? some of the flasher devs told us that this may result in some kind of quirks

Really starting to wonder if this is my issue. I took xhp off my car after having nothing but horrible experiences regardless of settings on my car making 700+ whp.