Launch control for Motronic

[Zoig]

Use of the wiper stalk knob is interesting but adds to the cost considerably and of course the pot would need to be the right range.

The pot/rheostat range on the stalk should be enough to change voltage from 5v-0v ?
I'll check the resistance once I get my hands on to one of them. Might not happen soon tho..

Stalk option is my preference because it is not fairly obvious on it's function and it's out of co drivers reach. They sometimes tend to fiddle with knobs witch look interesting, regardless of the function ("Oh! what does this 'FUNK' button do?" *click* ).

[Thuppu]

I have a question here! Is it possible to play with such a potentiometer and can trim injector PW, boost and advance?

Advance +- 10 degrees
Boost +- 0.7 bar
Injector PW +- 10 MS or so.

Something like this would be great!

Like Billmans idea. If you change something small on your engine you can easily fix it, don't need full remap after small tweaks...

[S2central.net]

The pot/rheostat range on the stalk should be enough to change voltage from 5v-0v ?
I'll check the resistance once I get my hands on to one of them. Might not happen soon tho..

Stalk option is my preference because it is not fairly obvious on it's function and it's out of co drivers reach. They sometimes tend to fiddle with knobs witch look interesting, regardless of the function ("Oh! what does this 'FUNK' button do?" *click* ).

co-driver can fiddle all day long with the knob - it has no effect on normal driving - the driver would adjust knob for a launch.

Range of pot is more to do with a failsafe when coupled to FSS wiring. I am certain it could be made work as a special though if the wiper stalk idea is a must have. BTW - have you actually tried to fit B5 stalk onto B3/B4 yet ?

Note to self to finally buy that 'funk' button though

[prj]

But you can already do that with a chip programmer, or better an emulator.
Of course you will need to know where to change what...

My plan is to someday make a daughterboard for the ECU, which will allow anyone to map their own car...

[Thuppu]

Wow, great plans Dmitri. It should have a really simpple software gui, for dummies.

[prj]

Wow, great plans Dmitri. It should have a really simpple software gui, for dummies.

It will never be simple, because Motronic is not simple.
The GUI would be TunerPro.
But with sufficient documentation and knowledge of engines - very possible.

The thing is though, I am not sure if there would be a market for this.

[quattrofrank]

Kinda depends on the price, the best aftermarket ecu`s costs about 2000euro`s or more. So I guess it needs to be somewhere between what the cost for the cheapest and the most expensive ones.

[prj]

Target price would be perhaps 450 EUR.
Over that and it's not worth it.

[Billman]

it should be below VEMS for sure so much less than the rest ECUs. With a standalone you must program idle and the rest but get away from the limitations of the factory ECU (MAF, no WB control, no EGT failsafes), antilag, lauchcontroll, flatshift in once.

Don't want to hijack and don't know if it's against any forum rules so please forgive me in advance and delete if necessary.

PRJ: Hurry Up

http://www.motorgeek.com/viewtopic.php?f=5&t=32928&hilit=self+tune

"We'll be releasing a self-tuning USB programmable ECU mod for the 7a, 3b, adu, aan, PT/ABH, etc."

[prj]

it should be below VEMS for sure so much less than the rest ECUs. With a standalone you must program idle and the rest but get away from the limitations of the factory ECU (MAF, no WB control, no EGT failsafes), antilag, lauchcontroll, flatshift in once.

Motronic without MAF on MAP sensor coming in summer most likely.
Don't know how well that'll work yet. Flat foot shift coming soon, WB control is not needed on a system with MAF, because it's MUCH more precise than speed-density.

PRJ: Hurry Up

http://www.motorgeek.com/viewtopic.php?f=5&t=32928&hilit=self+tune

"We'll be releasing a self-tuning USB programmable ECU mod for the 7a, 3b, adu, aan, PT/ABH, etc."

They said that a year ago, haven't seen anything yet.
It gets brought up every once in a while.

[Zoig]

BTW - have you actually tried to fit B5 stalk onto B3/B4 yet ?

Not yet, but it looks similiar enough to try, I have fitted C4 A6 stalk to B4, and also one unknown origin Cruise stalk to B4 (possibly B5 but I cant verify it). Basically only thing that needs to be chagned is the stalk on the base, the base itself with the inner end of the original stalk remains. Therefore it does not matter if the source stalk comes from limo or avant.

If electrical side fits for launch control, then i'll fidle with it until I get it fitted
It's on my to do list to find out if the rheostat is up to the task.

[mouse]

I voted both centre console buttons and diff switch area - keeping it oem looking would be a plus.. maybe the difflock area would keep the centre console looking cleaner. It would be good to incorporate bottons for switchable chipset & valet mode too.

Wiper stalk would be very cool but if other functions are installed you'd still need something else elsewhere.

[EspenW]

Coming soon - flatfoot shifting

Now we're talking
The 3rd to 4th shift steals so much time that I'm faster in the 100-200kmh by using 4th only. Flatfoot shifting could change that.

[prj]

Now we're talking
The 3rd to 4th shift steals so much time that I'm faster in the 100-200kmh by using 4th only. Flatfoot shifting could change that.

You are on Motronic?

[EspenW]

You are on Motronic?

Yep