Software controlled Freestanding Rev Limit / "Launch Control"

[BPMSport]

Originally Posted by Sal@Evolve

Cool feature which has been available for a long time but strangely no one talks about it too much!

Well done Mike for reminding us tuners to offer it as an option!

Just take care of those clutches boys!

Hey!! you better not start offering it!

Just kidding

[flipm3]

Originally Posted by Mike Benvo

Hey!! you better not start offering it!

Just kidding

Really though, a definite cool feature! Seeing this feature first hand on another E90 M3 awhile ago, it still takes a nice finesse of the throttle to get a solid launch. As you said, it really does make things a bit easier to launch. A fun perk to your tune for sure!

[Grail05]

dang this is nice... Great job guys... if ever im going to tune my car i am definately adding this feature.

[Jon@Bimmersport Automotive]

Originally Posted by m33

Where was this when I was 6Mt ...

It was known to be done a long...long time ago by AA.

Good post thoroughly explaining how it works.

Mike, are you able to edit launch control RPM and slip points/values in SMG software for E46 M3? I loaded CSL software but would not want it to be 5k more so around 4200rpm.

[BPMSport]

Originally Posted by Jon@Bimmersport Automotive

It was known to be done a long...long time ago by AA.

Good post thoroughly explaining how it works.

Mike, are you able to edit launch control RPM and slip points/values in SMG software for E46 M3? I loaded CSL software but would not want it to be 5k more so around 4200rpm.

Yes, I can do that. But would physically need the transmission control unit.

[AlexTek]

Originally Posted by Mike Benvo

A few people have been inquiring about the freestanding rev-limit change / "Launch Control/Assist" feature I offer with my performance software.

Background: This applies mainly to 6MT cars as DCT cars have 'real' launch control built in.

What it does: This changes the rev limiter while the car is not in motion. That means once you hit one mph, the full rev limit becomes immediately available. This allows you to hold a specific predefined launch RPM without any effort.

Why do I want this: For 6MT users, it makes it a hell of a lot easier to launch the car. You can keep the gas completely pegged with the clutch in, and it will rev to the desired value you have asked me to program your file with.

When you're ready to launch, simply release the clutch and modulate the throttle from there. Most people have me set theirs at 3000, 3500, or 4000. The stock freestanding rev limit is 7000 RPM. Counter-steering might be recommended

I took a quick video of it about 15 minutes ago and was surprised at how easy and efficient it is versus trying to modulate the throttle yourself for the initial launch. The car just hooked up and took off like a rocket.

I chose to do it with DSC off, works perfectly fine with MDM or Euro MDM as well.

Sorry for the bad video, next time I'll have a passenger and will post a better illustration of this feature. But for now it will at least give you the idea:

Hey Mike, it's Alex from warm Puerto Rico. It was a pleasure talking to you on the phone a while ago.

A question regarding this: You preset the rev limit value on the software, so I can not change it on the fly right? If you preset it at 4000rpm and I think I can launch higher, I can not change it my self, like the guys on DCT?

Will be contacting you in exactly 2 weeks!

[Longbow64]

I started with mine set at 3500. I felt the RPMs dipped too low at the point of launch so Mike emailed me two additional tunes for a 4000 and 4500 rpm launch. I found the 4000 worked best for me. It takes about 5 min and a laptop to switch tunes.

[AlexTek]

Originally Posted by Longbow64

I started with mine set at 3500. I felt the RPMs dipped too low at the point of launch so Mike emailed me two additional tunes for a 4000 and 4500 rpm launch. I found the 4000 worked best for me. It takes about 5 min and a laptop to switch tunes.

Great! Thanks for the detail. So I can switch a map easily then. Just perfect

[jeff@autocouture]

what about for us supercharged guys? can this be added

[BPMSport]

Originally Posted by Alex@dirtywerkz

what about for us supercharged guys? can this be added

Yes it can

[S65V8]

that rocks Benvo, awesome job!

[BPMSport]

Originally Posted by SROC5

that rocks Benvo, awesome job!

Thanks Paul, say hi to your brother for me.

[Aha]

1 quick question.
gonna try bpm launch control on 3500 rpm.

but heres the thing. sometimes i just wanna rev my car while waiting for the signal light.
but if launch control is added in the feature will it always stop the rpm at 3500 on 1st gear?
or is there anyway to pass 3500?

thx

[BPMSport]

Originally Posted by Aha

1 quick question.
gonna try bpm launch control on 3500 rpm.

but heres the thing. sometimes i just wanna rev my car while waiting for the signal light.
but if launch control is added in the feature will it always stop the rpm at 3500 on 1st gear?
or is there anyway to pass 3500?

thx

Yes, if you're rolling even 1mph you'll be able to rev to redline.. Although we never suggest revving up high without any load..