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      10-16-2014, 02:47 PM   #1
Mike@N54Tuning.com
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BMS Stage1 s63tu New User Adjustable Setting

Hey gang,

Saw this posted in the s63tu sticky and thought some here might want to help test the new firmware and setting out. Apparently BMS has had a couple customers request a variable to let them scale torque up higher along the power band. BMS' response below.

Quote:
We've had a couple customers now ask if we can add a user adjustable variable to the Stage1 firmware which gives the option to reduce the torque in the low end and midrange. The idea behind this would be to smooth out the partial throttle control and with reduced low end torque give a stronger sensation of pull towards redline. Of course, the car would be slower with less low end torque, but easier to manage launching, and some might find the overall tuning approach smoother. This would be controlled via a user adjustable variable that would give you the option to shift the torque curve up or down the power band.
While it's not my personal taste really (who wants less torque?) it just so happens that is something that can be adjusted via the Stage1. If anyone is interested in helping test it out just shoot me an email with a CSV log. From the CSV I can see what Stage1 board type you have and send the correct file/setting to try out.

Mike
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      10-16-2014, 02:57 PM   #2
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Great post.
When he is referencing to "The type of stage 1 board type", what does that mean ?
Are there different units out there for the same model engine ?
For example before the official release of the JB for M5/M6 vehicles, Terry from BMS had everyone use the 550/650 (N63) units and change the "user feature" and then that unit was then ready for M5/M6 application.
But now on his website the he lists the S63TU units separate.
Are we running the incorrect version if we were sold the N63 kits prior ?
Thanks for you time. You always answer very well for the BMS team
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      10-16-2014, 04:57 PM   #3
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Quote:
Originally Posted by EuroKar View Post
Great post.
When he is referencing to "The type of stage 1 board type", what does that mean ?
Are there different units out there for the same model engine ?
For example before the official release of the JB for M5/M6 vehicles, Terry from BMS had everyone use the 550/650 (N63) units and change the "user feature" and then that unit was then ready for M5/M6 application.
But now on his website the he lists the S63TU units separate.
Are we running the incorrect version if we were sold the N63 kits prior ?
Thanks for you time. You always answer very well for the BMS team
There are basically two board types used for the s63 Stage1. There is the G3 board and the G3_V2 board. The G3_V2 is the one that includes methanol support, fuel control, logs with the JB4 interface, etc. A lot of the stuff on there is not used for the s63tu (yet) but is used for the n63 Stage2. Most newer orders ship with the G3_V2 board and most older orders have the original G3 board.

Under firmware if your date ends with //3 it's the G3 board and if its //4 then it's the G3_V2 board.

Note these are both Stage1 boards and BMS does not offer a JB4 system for this platform.

Mike
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      10-16-2014, 06:44 PM   #4
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
There are basically two board types used for the s63 Stage1. There is the G3 board and the G3_V2 board. The G3_V2 is the one that includes methanol support, fuel control, logs with the JB4 interface, etc. A lot of the stuff on there is not used for the s63tu (yet) but is used for the n63 Stage2. Most newer orders ship with the G3_V2 board and most older orders have the original G3 board.

Under firmware if your date ends with //3 it's the G3 board and if its //4 then it's the G3_V2 board.

Note these are both Stage1 boards and BMS does not offer a JB4 system for this platform.

Mike

Thanks Mike. Makes sense
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      10-16-2014, 07:25 PM   #5
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I'm in that is if you have a board for stage 2 methanol intergration. But I want more torque up top lol

Let me know!

G

Last edited by m6beast; 10-16-2014 at 10:04 PM..
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      10-17-2014, 05:04 PM   #6
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Quote:
Originally Posted by m6beast View Post
I'm in that is if you have a board for stage 2 methanol intergration. But I want more torque up top lol

Let me know!

G
Just email BMS for the firmware!

As as side note BMS only offers a Stage1 tune for this platform but it's funny to read all this talk about s63 "advanced" fuel control and related assertions as they apply to other piggybacks.

The fuel control being talked up is biasing of the wideband o2 sensors by applying a voltage through a resistor, and biasing of the fuel pressure input of a few tenths of a volt. BMS pioneered these mechanisms for adjusting closed loop fueling in 2007 and they are available on all of their tunes, even the simple Stage1 tune, provided the wires are connected to the control box. The reality is the boost increase we're working with here with their Stage1 tune is not enough to max out the long and short term fuel trims which is why BMS hasn't included the fuel biasing harness with the s63 tune. These so called advanced piggyback boxes I'm reading about don't even include crank position offsetting to directly adjust timing advance as is offered on the JB4 G5 board. It will be interesting one of these days when someone does a bench test and reveals what is _really_ going on in
each black box.

But I digress the BMS Stage1 is a simple tune (analog&digital I/O only, no CANbus as a JB4 has) intended to offer 2-3psi increases over stock. The reality is this tune drives differently than other similar tunes due to how the boost is mapped in relation to pedal input and RPM. BMS's concept with the Stage1 is to preset it to their taste and then provide the proper variables to let users adjust it to their specific needs. This new variable combined with the variable to adjust the peak boost increase at high RPM will be a nice addition to s63 Stage1 and better allow people to adjust the tune to their driving taste.

Mike
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      10-21-2014, 09:07 PM   #7
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BMS is still looking for more testers. If anyone doesn't like the Stage1 part throttle and low end mapping then email BMS to help test out the changes.

Mike
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      10-22-2014, 01:52 PM   #8
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS is still looking for more testers. If anyone doesn't like the Stage1 part throttle and low end mapping then email BMS to help test out the changes.

Mike
Does this update work for the N63 harnesses that were offered before the newer S63 kit was out ?
That's the kit that myself and 2 other people near me have.
Thanks for the info
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      10-22-2014, 02:16 PM   #9
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Quote:
Originally Posted by EuroKar View Post
Does this update work for the N63 harnesses that were offered before the newer S63 kit was out ?
That's the kit that myself and 2 other people near me have.
Thanks for the info

BMS has the firmware for the original G3 board as well although it's not been tested as much as the G3_V2 board that ships with s63 Stage1 kits currently. If you want to help test it you're welcome to email them although since you are an authorized Dinan dealer they may prefer feedback from more independent enthusiasts at least in the earlier stages of testing.

Mike
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      10-22-2014, 02:18 PM   #10
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BMS forwarded me these customer boost logs of what the revised setting does. Both are from 2000rpm to redline. The first chart is the boost profile with the current firmware while the second chart is the boost profile with the new setting enabled. Note that with the setting enabled there is a much smoother boost ramp up as a function of RPM compared to the current firmware. This is especially noticeable in the various partial throttle positions where the new setting will allow more precise torque control.

Mike
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      10-22-2014, 02:44 PM   #11
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS forwarded me these customer boost logs of what the revised setting does. Both are from 2000rpm to redline. The first chart is the boost profile with the current firmware while the second chart is the boost profile with the new setting enabled. Note that with the setting enabled there is a much smoother boost ramp up as a function of RPM compared to the current firmware. This is especially noticeable in the various partial throttle positions where the new setting will allow more precise torque control.

Mike
You welcome! Keep the ball rolling Mike!

G
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      10-22-2014, 03:04 PM   #12
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS has the firmware for the original G3 board as well although it's not been tested as much as the G3_V2 board that ships with s63 Stage1 kits currently. If you want to help test it you're welcome to email them although since you are an authorized Dinan dealer they may prefer feedback from more independent enthusiasts at least in the earlier stages of testing.

Mike
Well I cant buy or sell BMS tunes in CA anymore and I do have clients with BMS so I would like to offer them great service still regardless.

I emailed BMS asking about the update and how I can offer that to my clients already with their setup.
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      10-22-2014, 06:42 PM   #13
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Quote:
Originally Posted by EuroKar View Post
Well I cant buy or sell BMS tunes in CA anymore and I do have clients with BMS so I would like to offer them great service still regardless.

I emailed BMS asking about the update and how I can offer that to my clients already with their setup.
BMS has a several employees. For development work you'd have to email Terry directly. For general tech inquiries they will probably have no idea what you're asking about.

We can ship into cali no problem

Mike
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      10-23-2014, 11:29 AM   #14
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS has a several employees. For development work you'd have to email Terry directly. For general tech inquiries they will probably have no idea what you're asking about.

We can ship into cali no problem

Mike
I'll have to email Terry again.
I tried recently to purchase a tune for a client of mine that is interested. Even he was denied because of living in CA. But I assume it is only for the tunes.
I purchase the oil catch cans from BMS. Those work so great for the N engines !!
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      10-30-2014, 11:16 AM   #15
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BMS tells me to date only one or two customers have been interested to test and give them feedback on the smoother firmware. Surely more of you must want to try it out?

Mike
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      10-30-2014, 11:17 AM   #16
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Quote:
Originally Posted by EuroKar View Post
I'll have to email Terry again.
I tried recently to purchase a tune for a client of mine that is interested. Even he was denied because of living in CA. But I assume it is only for the tunes.
I purchase the oil catch cans from BMS. Those work so great for the N engines !!
We ship into Cali so you can always PM me if needed.

Mike
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      10-30-2014, 11:59 AM   #17
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS tells me to date only one or two customers have been interested to test and give them feedback on the smoother firmware. Surely more of you must want to try it out?

Mike
My car is in storage for the winter. So I'm out till April-ish.
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      11-24-2014, 08:15 AM   #18
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
BMS tells me to date only one or two customers have been interested to test and give them feedback on the smoother firmware. Surely more of you must want to try it out?

Mike
Hi Mike, any chance to try out the new firmware?
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      11-24-2014, 11:25 AM   #19
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Quote:
Originally Posted by Andym3100k View Post
Hi Mike, any chance to try out the new firmware?
Just email Terry at BMS if you are interested to test it out.

Mike
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      11-24-2014, 05:27 PM   #20
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Just email Terry at BMS if you are interested to test it out.

Mike
Roger that.
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