M3 CS Coding onto M3X Comp?

somer · 06-24-2023, 12:45 PM

Quote:

Originally Posted by hellcat2m4

Will check this out now, thanks.

Assuming XHP doesn't overwrite all the TCU tables, could maybe go with CS/CSL gearbox tune plus XHP Stage 1 which removes torque limiters. Just a thought..

81bear · 06-24-2023, 04:30 PM

Quote:

Originally Posted by somer

Assuming XHP doesn't overwrite all the TCU tables, could maybe go with CS/CSL gearbox tune plus XHP Stage 1 which removes torque limiters. Just a thought..

I would guess that the xhp tune does overwrite the entire tcu tune but there’s only one way to find out…

I would also guess that the CS/CSL tune adjusts the torque limiter and line pressures as I no longer experience the bogging down during shifts described in the video.

If I get a chance I’ll try running map 3 on E30 and see if the bogging reappears at higher power levels.

M4nication · 06-28-2023, 04:52 PM

Hmmm, on top of the tranmission, steering, and MDM, I'm wondering if the suspension is worth it if you buy the M3CS parts.

The only differences seem to be the springs, dampers, and anti-rollbar. You can get the anti-roll bar for under $300 no issue. And maybe I'm wrong, but the springs and dampers just seem to be the M Performance HAS kit. Which my car already has, as I optioned it. So if I get the CS front anti-roll bar, maybe the suspension tune would be viable as technically I would have the CS suspension?

scoobystas · 06-28-2023, 10:39 PM

Quote:

Originally Posted by M4nication

Hmmm, on top of the tranmission, steering, and MDM, I'm wondering if the suspension is worth it if you buy the M3CS parts.

The only differences seem to be the springs, dampers, and anti-rollbar. You can get the anti-roll bar for under $300 no issue. And maybe I'm wrong, but the springs and dampers just seem to be the M Performance HAS kit. Which my car already has, as I optioned it. So if I get the CS front anti-roll bar, maybe the suspension tune would be viable as technically I would have the CS suspension?

what are the details of the front CS sway bar? if its thicker...in general if i recall correctly, a thicker bar will create more understeer....?

M4nication · 06-28-2023, 10:58 PM

Quote:

Originally Posted by scoobystas

what are the details of the front CS sway bar? if its thicker...in general if i recall correctly, a thicker bar will create more understeer....?

I'm not sure on the exact specifics, at the very least it is thicker. That being said, I doubt BMW would put something that makes the car handle worse on the one that's supposed to (and has been reviewed to) handle better

BIGW0RM · 06-29-2023, 09:32 AM

Quote:

Originally Posted by M4nication

Hmmm, on top of the tranmission, steering, and MDM, I'm wondering if the suspension is worth it if you buy the M3CS parts.

The only differences seem to be the springs, dampers, and anti-rollbar. You can get the anti-roll bar for under $300 no issue. And maybe I'm wrong, but the springs and dampers just seem to be the M Performance HAS kit. Which my car already has, as I optioned it. So if I get the CS front anti-roll bar, maybe the suspension tune would be viable as technically I would have the CS suspension?

The believe Ive read that the CS struts mount differently than the comp. So there are some differences other than just springs and sway.

M4nication · 06-29-2023, 11:02 AM

Quote:

Originally Posted by BIGW0RM

The believe Ive read that the CS struts mount differently than the comp. So there are some differences other than just springs and sway.

Hmm, I wonder in what way they are mounted differently. Like if it's completely different parts, or something a bit easier. I think I heard something about camber plates too

Reprosal · 06-29-2023, 06:08 PM

Still on the fence about only doing transmission flash. Not many people have posted any dragy or track related benefits.

Stelongy · 06-30-2023, 03:30 PM

Just had the full CS software put on my g82 comp xdrive, as per above comments it’s totally changed the car for me.

Faster shifts, no redline hang, a slight bit more aggressive.
I also find the steering to be a nice improvement.

P.S I’ve also noticed faster dragy times

kubax86 · 07-01-2023, 08:58 AM

Quote:

Originally Posted by Stelongy

Just had the full CS software put on my g82 comp xdrive, as per above comments it’s totally changed the car for me.

Faster shifts, no redline hang, a slight bit more aggressive.
I also find the steering to be a nice improvement.

P.S I’ve also noticed faster dragy times

Very good!

Dravitdaddy · 07-01-2023, 09:35 AM

I normally don’t really bother to endorse things, but you guys will definitely want the CS tranny flash. It is night and day. Very fast yet smooth. If I didn’t know , I would think the car had the DCT from the F80. I no longer have a desire to bother with the xhp flash. Best mod for the money on the car thus far. Thanks @kubax86

81bear · 07-01-2023, 10:13 AM

+1 brother. I really feel like this is the best bang for the buck mod.

Reading through the xhp thread it seems most people want the xhp tune to feel like the cs tune. I’m sure at some point a current xhp adopter will make the switch and then we’ll get a comparison between the two tunes. Can’t see myself switching, as the cs tune is that good, but who knows…

kgelfen360 · 07-01-2023, 10:17 AM

Quote:

Originally Posted by Dravitdaddy

I normally don’t really bother to endorse things, but you guys will definitely want the CS tranny flash. It is night and day. Very fast yet smooth. If I didn’t know , I would think the car had the DCT from the F80. I no longer have a desire to bother with the xhp flash. Best mod for the money on the car thus far. Thanks @kubax86

Was that the only mod you did? Just curious

hellcat2m4 · 07-01-2023, 10:47 AM

If I had a windows laptop I would try and compare with XHP stage 3 thats currently on the car.

Will ask a couple friends to see if I can borrow one.

kubax86 · 07-01-2023, 10:50 AM

Quote:

Originally Posted by Dravitdaddy

I normally don’t really bother to endorse things, but you guys will definitely want the CS tranny flash. It is night and day. Very fast yet smooth. If I didn’t know , I would think the car had the DCT from the F80. I no longer have a desire to bother with the xhp flash. Best mod for the money on the car thus far. Thanks @kubax86

thanks, appreciate your feedback

81bear · 07-01-2023, 10:53 AM

Quote:

Originally Posted by hellcat2m4

If I had a windows laptop I would try and compare with XHP stage 3 thats currently on the car.

Will ask a couple friends to see if I can borrow one.

I used my Mac running boot camp and the install was super quick. No issues.

Murf · 07-01-2023, 11:08 AM

Quote:

Originally Posted by Stelongy

Just had the full CS software put on my g82 comp xdrive, as per above comments it’s totally changed the car for me.

Faster shifts, no redline hang, a slight bit more aggressive.
I also find the steering to be a nice improvement.

P.S I’ve also noticed faster dragy times

I'm very tempted to do the transmission flash and this feedback is helpful. On the fence about the steering, can you provide any more detail regarding the upgrade, vs stock? Thanks!

Dravitdaddy · 07-01-2023, 11:50 AM

Quote:

Originally Posted by kgelfen360

Was that the only mod you did? Just curious

No real power adders. Just a AA single midpipe and MST intakes.

Needsdecaf · 07-01-2023, 03:20 PM

So what, comprehensively, does this change?

Gearbox map - yes
Steering map - yes?
Nothing powertrain wise?
Anything else?

81bear · 07-01-2023, 03:51 PM

Quote:

Originally Posted by Needsdecaf

So what, comprehensively, does this change?

Gearbox map - yes
Steering map - yes?
Nothing powertrain wise?
Anything else?

MDM

ifizik · 07-01-2023, 04:32 PM

A step-by-step DIY would be a god send to us noobs.

Stelongy · 07-01-2023, 04:41 PM

Quote:

Originally Posted by Murf

I'm very tempted to do the transmission flash and this feedback is helpful. On the fence about the steering, can you provide any more detail regarding the upgrade, vs stock? Thanks!

The steering just loads up better and provides more feedback.

I’m going to get the alignment done to match the CS too I think.

I did put a quick video on YouTube too and you can hear the gear changes are quicker on that

06-28-2023, 04:52 PM	#69
M4nication First Lieutenant 490 Rep 318 Posts Drives: '24 M4 Competition xDrive Join Date: Apr 2023 Location: Los Angeles iTrader: (0) Garage List 2024 BMW M4 Competi ... [10.00]	Hmmm, on top of the tranmission, steering, and MDM, I'm wondering if the suspension is worth it if you buy the M3CS parts. The only differences seem to be the springs, dampers, and anti-rollbar. You can get the anti-roll bar for under $300 no issue. And maybe I'm wrong, but the springs and dampers just seem to be the M Performance HAS kit. Which my car already has, as I optioned it. So if I get the CS front anti-roll bar, maybe the suspension tune would be viable as technically I would have the CS suspension?
	Appreciate 0 Quote

06-29-2023, 06:08 PM	#74
Reprosal First Lieutenant 214 Rep 353 Posts Drives: 2022 BMW M3XC Join Date: Apr 2021 Location: Canada iTrader: (2)	Still on the fence about only doing transmission flash. Not many people have posted any dragy or track related benefits.
	Appreciate 0 Quote

06-30-2023, 03:30 PM	#75
Stelongy Enlisted Member 95 Rep 35 Posts Drives: M4 Comp Xdrive Join Date: Jun 2023 Location: UK iTrader: (0)	Just had the full CS software put on my g82 comp xdrive, as per above comments it’s totally changed the car for me. Faster shifts, no redline hang, a slight bit more aggressive. I also find the steering to be a nice improvement. P.S I’ve also noticed faster dragy times
	Appreciate 6 hellcat2m4224.00 somer966.00 kgelfen3602215.50 Murf884.50 Needsdecaf6599.00 Not_Speeding21.00 Quote

07-01-2023, 09:35 AM	#77
Dravitdaddy New Member 15 Rep 17 Posts Drives: Bmw M3 Join Date: Jan 2023 Location: Tampa Fl iTrader: (0)	I normally don’t really bother to endorse things, but you guys will definitely want the CS tranny flash. It is night and day. Very fast yet smooth. If I didn’t know , I would think the car had the DCT from the F80. I no longer have a desire to bother with the xhp flash. Best mod for the money on the car thus far. Thanks @kubax86
	Appreciate 3 somer966.00 Needsdecaf6599.00 dovaro129.50 Quote

07-01-2023, 10:13 AM	#78
81bear Captain 428 Rep 652 Posts Drives: G80 M3 - FDG Join Date: Sep 2010 Location: Toronto iTrader: (4)	+1 brother. I really feel like this is the best bang for the buck mod. Reading through the xhp thread it seems most people want the xhp tune to feel like the cs tune. I’m sure at some point a current xhp adopter will make the switch and then we’ll get a comparison between the two tunes. Can’t see myself switching, as the cs tune is that good, but who knows…
	Appreciate 1 Needsdecaf6599.00 Quote

07-01-2023, 10:47 AM	#80
hellcat2m4 First Lieutenant 224 Rep 331 Posts Drives: 2022 M3 Competition Join Date: Jun 2018 Location: DFW Texas iTrader: (0)	If I had a windows laptop I would try and compare with XHP stage 3 thats currently on the car. Will ask a couple friends to see if I can borrow one.
	Appreciate 2 81bear427.50 Stelongy94.50 Quote

07-01-2023, 03:20 PM	#85
Needsdecaf Major General 6599 Rep 6,696 Posts Drives: 2024 G80 Comp xDrive Join Date: Feb 2011 Location: The Woodlands, TX iTrader: (0)	So what, comprehensively, does this change? Gearbox map - yes Steering map - yes? Nothing powertrain wise? Anything else?
	Appreciate 0 Quote

07-01-2023, 04:32 PM	#87
ifizik Private 30 Rep 78 Posts Drives: None Join Date: Mar 2022 Location: CA iTrader: (0)	A step-by-step DIY would be a god send to us noobs.
	Appreciate 0 Quote