Launch Control

[chicagobimmerboy]

If their are any SMG E46 owners out there tell me somthing... how do you engage the launch control in the M3? do US-spec cars have it?

The new 7-speed on the way allegedly has L/C and throttle blips on downshifts, wonder if it will operate similar to the E46's SMG

[Sedan_Clan]

Yeah, the US-spec cars have it, but my experience w/ SMG is limited.

[masmole]

Originally Posted by chicagobimmerboy

If their are any SMG E46 owners out there tell me somthing... how do you engage the launch control in the M3? do US-spec cars have it?

The new 7-speed on the way allegedly has L/C and throttle blips on downshifts, wonder if it will operate similar to the E46's SMG

Both the E46 M3 SMG and E60 M3 SMG had launch control but for the US, it was a somewhat handicapped version of LC. For the E46, it was a "hidden" feature while for the E60, LC worked the same as the european cars except the rpm's at which the SMG "dumped" the clutch was much lower. I haven't tried LC in a long time but I believe it dumped it at around 1600 rpms in my M5. This still resulted in a decent launch but not as dramatic as the RoW M5's 4k+ rpm dump.

[swamp2]

Originally Posted by chicagobimmerboy

If their are any SMG E46 owners out there tell me somthing... how do you engage the launch control in the M3? do US-spec cars have it?

The new 7-speed on the way allegedly has L/C and throttle blips on downshifts, wonder if it will operate similar to the E46's SMG

From a day to day functional POV DCT will likely behave EXACTLY like SMG. In manual mode shift with shifter or with paddles. A variety of manual and auto modes. I would be willing to guarantee rev matching on downshifts. It would simply be ludicrous if M-DCT did note offer this feature. All existing production systems (Audi and Mitsubishi) do offer this.

On LC my strong suspicion is a sort of crippled LC for the US compared to EU. The good thing there is this could likely be defeated (taken to EU version) solely with software. I should pose the question on m5board.com if anyone ever accomplished this.

[m_bazeepaymon]

Originally Posted by swamp2

From a day to day functional POV DCT will likely behave EXACTLY like SMG. In manual mode shift with shifter or with paddles. A variety of manual and auto modes. I would be willing to guarantee rev matching on downshifts. It would simply be ludicrous if M-DCT did note offer this feature. All existing production systems (Audi and Mitsubishi) do offer this.

On LC my strong suspicion is a sort of crippled LC for the US compared to EU. The good thing there is this could likely be defeated (taken to EU version) solely with software. I should pose the question on m5board.com if anyone ever accomplished this.

yes I agree with Swamp, that is the only issue with the US version of SMG...
but I have friends who over ride it with software and get their perfect launch

an example of software for this is ECS tuning

[swamp2]

Originally Posted by m_bazeepaymon

yes I agree with Swamp, that is the only issue with the US version of SMG...
but I have friends who over ride it with software and get their perfect launch

an example of software for this is ECS tuning

Over ride transmission software for which car? I thought ECS was VW/Audi only. Not clear from your comments.

[m_bazeepaymon]

Originally Posted by swamp2

Over ride transmission software for which car? I thought ECS was VW/Audi only. Not clear from your comments.

ECS tuning created a software for the SMG III on the E46 M3 where you can over ride the LC (launch control) from 1800 rpm to 3000 rpm...

I know they focus primarily on VW's and Audi's but Someone referred it to me a year and a half ago (I am looking for a link of selling on their website ecstuning.com)
Still am dry, I will find later...

But in conclusion I was just agreeing with you that 1800-3000 rpm launch is easily "fixable" but you may be voiding warranty... unless dealership won't notice the software...

[swamp2]

Originally Posted by m_bazeepaymon

ECS tuning created a software for the SMG III on the E46 M3 where you can over ride the LC (launch control) from 1800 rpm to 3000 rpm.

Cool, great. The first I have definitively heard of hacking BMW tranny software.

This could be possible with the steering as well! If normal feels too boosted and sport feels "better", but not great, this may be controllable purely by software.

[mkoesel]

Originally Posted by bimmerwithholes

is it possible to have a 6krpm launch for a FWD car?

Only if you are watching a snake eat a cricket.

Seriously, WTF.

[mkoesel]

Originally Posted by bimmerwithholes

You don't speak English? WTF

You think your post was remotely on topic?

[Sedan_Clan]

Originally Posted by m_bazeepaymon

ECS tuning created a software for the SMG III on the E46 M3 where you can over ride the LC (launch control) from 1800 rpm to 3000 rpm...

I know they focus primarily on VW's and Audi's but Someone referred it to me a year and a half ago (I am looking for a link of selling on their website ecstuning.com)
Still am dry, I will find later...

But in conclusion I was just agreeing with you that 1800-3000 rpm launch is easily "fixable" but you may be voiding warranty... unless dealership won't notice the software...

...SMG II SMG III is found on the M5/M6.

[Ted]

Originally Posted by bimmerwithholes

You don't think the topic is on Launch Control?

The topic is launch control, however launch control is a system designed to get a performance car, typically with an SMG gearbox, off the line as quick as possible.

A performance car is typically RWD only and sometimes AWD, I cannot think of a FWD genuine performance car nor a FWD car with SMG.

Further this is a BMW forum who have never made a FWD car so I'd say is probably not relevant to anyone who may come across the question here.

[mkoesel]

Thanks for explaining that for him, Ted. I see he deleted his post, so it looks like he finally got the message.