native launch control on DBC ecus, aeb/aha. proof of concept.

[k0mpresd]

this is not a 2step. so no pop pop, flames, scene points, or panties instantly dropping. sorry about that.

it is a native soft launch limiter enabled on an ecu with no type of limiter currently available.

yes, this is a mk3 obd2 vr but the same patch can be applied to any DBC obd2 ecu. aeb, aha, aeg, etc.

merry christmas.

https://youtu.be/v5xhAmNKUZ4

[bmos]

Neat! Awesome to see new functionality for our stock ECUs.

[B5A4coastie]

Any chance you could change the set point for this (driver chooses depending on conditions)? I'm sure that's complicated, but launching in the street is different than a sticky drag strip.

[k0mpresd]

would not be able to be changed on the fly. it is a hard coded limiter.

[cclarkb5]

One please


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[Kronprinz]

Has anyone here tried to launch a 1.8t at 3,000 rpm's?

What happened

Did you win the race?

[vrmm]

Your car will bog and probably want to die..
Granted I have a significantly larger turbo than stock and launch at 6-7k, 3k even with a k03 will just not work. iirc I tried back in the day at 4k and it wouldn't work. A stock clutch won't enjoy it either.

[Kronprinz]

Your car will bog and probably want to die..
Granted I have a significantly larger turbo than stock and launch at 6-7k, 3k even with a k03 will just not work. iirc I tried back in the day at 4k and it wouldn't work. A stock clutch won't enjoy it either.

That is exactly what I was getting at. This mod is absolutely 100% useless and counter productive, so I don't get why some people are in awe over this.

[SynapticA4TQM]

Bc people have turbos on their AEBs other than k03s.... and because previously it was an absolute that DBC couldn't have launch control like this... Sure the applicable market is slim, but then the number of folks modding B5 audi's is pretty slim compared to all the b5s sold... But folks still design stuff for them, some folks still race them... Lastly... Because it can be done.


Oozed from a pustule of thought somewhere within the recesses of my mind...

[Rodgman15]

That is exactly what I was getting at. This mod is absolutely 100% useless and counter productive, so I don't get why some people are in awe over this.

Because Kompressed tunes are dirt cheap, highly efficient, and lots of people run them. I'm sure he can just add it on to any ecu he's programming along with all the other additional features he adds (or codes out ). Are you able to set the rev limit when you order the ecu is my question, or is 3k the only option available? Even with this option it's still probably cheaper than any ots tune.

[k0mpresd]

the limiter could be set to 10k if you wanted it that high. it was only a proof of concept. its the holidays people. lighten up a bit.

[nynoah]

K0mpresed is a great guy to deal with :)

[Kronprinz]

it is a hard coded limiter.

the limiter could be set to 10k if you wanted it that high. it was only a proof of concept.

So people would need to practice launching to see what RPM is the best for their application, then they tell you what RPM to code into the ECU NICE

[k0mpresd]

not sure if sarcasm or not. must have been lost in translation.

im going to assume you see that as a positive.

but hey, if you dont like someone still trying to develop for that dinosaur of an ecu, then im happy to give up as well and move to bigger and better.

[Kronprinz]

not sure if sarcasm or not. must have been lost in translation.

hey, if you dont like someone still trying to develop for that dinosaur of an ecu, then im happy to give up as well and move to bigger and better as well.

If aimed at me, no sarcasm at all.

It's good to see no one has given up on the dinosaur b5 platform

[k0mpresd]

these olders are a bit more of a challenge but the challenge is what makes it fun.

[Kronprinz]

To challenge yourself, is to better yourself.-Some one once said lol

[M-Hood]

So people would need to practice launching to see what RPM is the best for their application, then they tell you what RPM to code into the ECU NICE

How would they do that because launching on a rev limiter (2 step) is completely different then launching without one, a rev limiter for launching is best used for a FWD car seeing it limits wheel spin when on a AWD turbo car you want some wheel spin to keep the car from bogging if the tires get full traction before the car is moving. Fact is that our AWD turbo cars need the RPM rising at a fast rate to get the best launch.

[k0mpresd]

except this isnt a 2step limiter, as stated originally.

[Kronprinz]

except this isnt a 2step limiter, as stated originally.

How does the 2 step differ from this native launch control? How does this native launch control cut? Does it retard timing, cut fuel, cut ignition, or a combination of the said?

[k0mpresd]

2step retards ignition. this is a fuel cut. no load produced.

[BaseDrifter]

Nice work! I was considering getting a new tune from you anyways..hmm.

[M-Hood]

2step retards ignition. this is a fuel cut. no load produced.

Is it cutting fuel from all cylinders or a few at a time? WOTbox holds the rpm by cutting spark which is why it doesn't really produce much boost.

[mysman]

Thanks for continuing development on the narrow band DBC Motronic system. I've read nothing but rave reviews on k0mpresd tunes. I like the emissions delete you offer as well. Presently running APR but sitting on a brand new, BW K04.