[Mike@N54Tuning.com]

Just got some dyno charts and logs from BMS I wanted to share with you guys. The car has downpipes, IC, DCI, JB3-G4, and 92 octane. Here are their notes in no particular order:

1) Autotuning is disabled right now as we're focused on the new boost control system.
2) The new boost control system is working well and is 10x better than the G3 system but there are still a few tweaks that need to be made. Also with its adaptive component we're working to prevent it from needing to reset each time a map switch happens. I think we'll get there with the next update.
3) The current bypass map is really a bypass + 1psi map for some reason. Will fix that.
4) Very happy with the new air/fuel curves which have allowed more timing and power for a given boost level. Safer too.
5) You'll note the JB3 logs now include ignition advance and throttle position. Also available but not shown as they are not scaled yet are EGT, air/fuel, DME duty cycle, DME boost target, etc. Logs are sampled at 10hz currently which is the maximum you can reliably pull data from the DME CAN interface. For those wondering other systems that claim higher sample points are just sending repeated rows with the same CAN data such as timing advance, etc, repeated. They are also sampling CAN at 10hz.
6) The pink line on the log called target represents the actual boost target. Each map has its own curve and there is a user adjustable map where you can enter your desired boost target in 500rpm increments. And no longer will you have to worry about boost dropping during cold weather. Also there is an autotuning system that will adjust each curve +- 5psi based on CAN feedback. The average user will just likely just pick map 1 with autotuning on and let it take care of everything for them.
7) The 13psi run represents where autotuning is likely to tune someone mostly stockish while the 15psi run represents where someone running full bolt ons and 93 is likely to wind up.

Also included is a video of the runs and one of the new steering wheel control system that allows map switching, code reading, etc, all at your fingertips. Some cool exciting stuff.

Mike

[BrianMN]

I'm diggin the sandals!

[Irishace]

Thanks for posting Mike.

Is the ignition drop off on the graphs shown above related to the vanos event as it seems to occur around the 4200 rpm mark?

[ren]

Good progress on re-engineering.

[Mike@N54Tuning.com]

Originally Posted by Irishace

Thanks for posting Mike.

Is the ignition drop off on the graphs shown above related to the vanos event as it seems to occur around the 4200 rpm mark?

It's just your typical 4200rpm timing drop always seen in PROcede and JB3 logs alike. I'd defer to BMS on the details but they tell me its nothing to worry about.

Mike

[Forcefed3]

Looks good, cant wait!

[Bagelfast]

Cant wait to try this outttttttttttt.. Great work so far..

[Ilma]

Originally Posted by Mike@N54Tuning.com

It's just your typical 4200rpm timing drop always seen in PROcede and JB3 logs alike. I'd defer to BMS on the details but they tell me its nothing to worry about.

Mike

But I thought you said in another thread somewhere that this dip was a knock event....and this was proof that timing control was not effective

Do you not recall saying that?

[BrianMN]

You're saying the timing dropout at 4200 is completely normal and OK?

[Mike@N54Tuning.com]

Originally Posted by Ilma

But I thought you said in another thread somewhere that this dip was a knock event....and this was proof that timing control was not effective

Do you not recall saying that?

It's the same dip you see on your logs as well. The ECU seems to go extra sensitive in that range for reasons no one has ever explained to me. So I won't attempt to explain it to you. I only know if you add race gas or meth the dip disappears.

Mike

[Ilma]

Originally Posted by Mike@N54Tuning.com

It's the same dip you see on your logs as well. The ECU seems to go extra sensitive in that range for reasons no one has ever explained to me. So I won't attempt to explain it to you. I only know if you add race gas or meth the dip disappears.

Mike

That's my observation too.....higher octane seems to reduce it's occurence.

Also helps bypass it if you ease into the throttle rather than hammering it.

So I guess the theory is that increased octane helped eliminate that as a knock event?

[Mike@N54Tuning.com]

Originally Posted by Ilma

That's my observation too.....higher octane seems to reduce it's occurence.

Also helps bypass it if you ease into the throttle rather than hammering it.

So I guess the theory is that increased octane helped eliminate that as a knock event?

The theory according to BMS is that the DME is programmed to be extra sensitive to knock sensor feedback in that range as part of the VANOS changeover. And that timing dips there are of no concern.

Mike

[Clap135]

1. power looks really wavey for all they hype.
2. timing drops are ALWAYS a concern.

[Ilma]

Originally Posted by Mike@N54Tuning.com

7) The 13psi run represents where autotuning is likely to tune someone mostly stockish while the 15psi run represents where someone running full bolt ons and 93 is likely to wind up.

That's been my experience on Procede too.

13ish psi on stockish modifications returns very stock-like timing curves.

Going beyond this on pump starts to induce mid-rpm dips which I don't like to see.

Nice Sandals!

[Mike@N54Tuning.com]

Originally Posted by erensf

Good progress on re-engineering.

[techlogik]

Originally Posted by Mike@N54Tuning.com

It's just your typical 4200rpm timing drop always seen in PROcede and JB3 logs alike. I'd defer to BMS on the details but they tell me its nothing to worry about.

Mike

Mmm...I thought that is the VANOS crossover and it kicking in?

[Mike@N54Tuning.com]

Just heard BMS got the oil temp protection added. Runs stock tuning, around 5-6psi, until 140 degrees then ramps up to full strength by 160 degrees. At 270 degrees ramps down to stock @ 280 degrees. Oil temp is viewable in interface but isn't a charting option yet. There is also an option to bypass it for you "drive it like it's leased" types.

Mike

[Clap135]

i vote dtc map switching next.....lol
good feature, I actually like that you guys went lower, sometimes its annoying to have to wait till 170, esp when staging. Probably safer at 170, but less pratical at times.

[Mike@N54Tuning.com]

Originally Posted by Clap135

i vote dtc map switching next.....lol
good feature, I actually like that you guys went lower, sometimes its annoying to have to wait till 170, esp when staging. Probably safer at 170, but less pratical at times.

LOL no for the map switching you use the steering wheel controls shown in the video. On the oil temp there is also an option to turn it off for those that want to.

Mike