[Mike@N54Tuning.com]

Hey guys,

BMS just posted the JB4 6/4 firmware and interface on their site for your beta testing pleasures. Early feedback on the new features has been very positive. In addition to adding MaxCool (just in time for summer!) they've also expanded the in dash gauge options. You can now select boost, timing, iat, water temp, EGT, AFR, and meth independently for fuel and/or oil. The new stealth mode changes are great too. Your in dash gauges will show fuel and oil temperature until going over 50% throttle at which point they will show the remapped gauges. After 15 seconds of no heavy throttle they snap back to stock operation. Very cool.

6/4 Beta Firmware:

1) Adjusted heavy part throttle wastegate mapping to reduce part throttle oscillation.
2) Corrected bug allowing effective PWM limit to be raised an additional 0.4%.
3) If the "mode" option under settings is set to any value greater than 0 user settings will not be reset to default during firmware uploads. Useful for those with custom mapping, etc.
4) Enabled methanol mapping additive and overflow failsafe for user definable map 6 as well as map 3.
5) Fixed bug with map 6 lower rpm boost values not saving.
6) Fixed bug with false 2ABC code triggered at very high elevations of 10,000'+
7) Added support for VC2/CMGS FSB by setting MethFlowMax to 100 and JB4 direct FSB by setting FutureUseD to 99.
8) Changed unused "FpSafety" user adjustable to "FpMapping" adjustable now used for fine tuning fuel pressure. A value of 0 disables fuel pressure mapping. A value of 90 matches the previous setting and is the new default.
9) Moved disabling adaptive FFPID from FutureUseD=99 to FutureUseD=98.
10) Adjusted laptop steering wheel commands to only function if FutureUseD=1 is set disabling normal steering wheel controls.
11) Added alpha "max cool mode" feature. Enable with menu 6 option 1. Disable with menu 6 option 2. Water pump and fan will run at 100% duty when water temperature is between 160 and 202 degrees F. At 203 degrees F the DME ignores the fan command but appears to continue to overrun the water pump. We'll keep working on finding a way to extend the fan range upward to make the feature more useful.
12) Added WaterTemp, EGT, and AFR options to gauge hijacking. Note EGT is read from factory DME and more study is required to determine if there is any useful application for it as a gauge.
13) Changed menu 2 to fuel gauge only options and added menu 7 for oil gauge only options. Now allows independent configuration of 7 parameters with each.
14) Changed CSV export default naming to YYMMDD_HHmm where time is in a 24hour format.
15) Changed "stealth gauge" mode to trigger over 50% throttle and added 15 second delay when going under 50% throttle before gauges return to stock operation.
16) Adjusted interface "WOT only" to display properly if a log starts under WOT, added a separator between runs, and lowered threshold to 40% TPS.
17) Adjusted Exp1 fields as follows. Default: AvgIgnRetard (degrees off maximum curve), FUD=3: LPH / 10, FUD=4: Speed in KMH / 10, FUD=5: Low fuel pressure / 10, FUD=6: EGT in F / 10, FUD=7: Water Temp in F / 10.

[dzenno]

Mike, can you explain this feature a bit:

8) Changed unused "FpSafety" user adjustable to "FpMapping" adjustable now used for fine tuning fuel pressure. A value of 0 disables fuel pressure mapping. A value of 90 matches the previous setting and is the new default.

What happens if FP is set to zero and you up boost? Why even bother with fuel pressure when the system is closed loop and will auto-adjust based on front widebands? What does 90 really mean in terms of units? Is that a multiplier or how does it work?

[FORCED AIR]

Anyone else have experience with running fans at speed. I remember on previous cars with manual switches on the fan you had to shut off over like 35 mph because it actually hindered airflow. Stock fans turn off for speed on every car i have checked....

Any thoughts or info on this as it pertains to the Max Cool feature?

[Mike@N54Tuning.com]

Originally Posted by dzenno

Mike, can you explain this feature a bit:

8) Changed unused "FpSafety" user adjustable to "FpMapping" adjustable now used for fine tuning fuel pressure. A value of 0 disables fuel pressure mapping. A value of 90 matches the previous setting and is the new default.

What happens if FP is set to zero and you up boost? Why even bother with fuel pressure when the system is closed loop and will auto-adjust based on front widebands? What does 90 really mean in terms of units? Is that a multiplier or how does it work?

0 would be stock fuel pressure and 100 would be much higher than stock fuel pressure. 90 is the default setting. It's also mapped on a variety of things including boost over stock, RPM, etc. For additional info you'll need to get in touch with BMS directly.

Mike

[Mike@N54Tuning.com]

Originally Posted by FORCED AIR

Anyone else have experience with running fans at speed. I remember on previous cars with manual switches on the fan you had to shut off over like 35 mph because it actually hindered airflow. Stock fans turn off for speed on every car i have checked....

Any thoughts or info on this as it pertains to the Max Cool feature?

They found in testing the cooling was improved leaving the fan on even at higher speed. I think at some speed they programmed it to turn off. Might be 80mph or so. I would have to check with BMS.

Mike

[rmdvrs]

Originally Posted by Mike@N54Tuning.com

0 would be stock fuel pressure and 100 would be much higher than stock fuel pressure. 90 is the default setting. It's also mapped on a variety of things including boost over stock, RPM, etc. For additional info you'll need to get in touch with BMS directly.

Mike

Thanks Mike I was going to just post but that's the easiest way to put it without Terry's expertise. Trust me guys, I have been running this for weeks and from the first time Terry told me to set the FPMapping (was FPsafety at first) to 90 I have been loving the car. The car responds really well in the entire rpm range. The car was a beast down low but once I hit about 80 the car would taper down and while it was still fast on the freeway when I went WOT, it wasn't as good as it was down low. Now at 80 when I go WOT the car pulls like it does when I am doing 40. Before when I was on the freeway there were cars that I know I could beat from a dig or a roll keeping up with me but now no chance. I just hit it and watch them in my rear view mirror. You guys will like this update. As far as the max cool mode the fan does stay on all the time and is pretty loud. I was able to hear it over the radio. I didn't hear it while I was doing some logs which I usually hit 65-70 easy but I wasn't paying attention either. Too busy making sure the surroundings are safe and hitting the buttons on the laptop so I'm not sure if it stops after 80 or not.

I have had no issues with the new firmware, even in the alpha stages. So update your firmware and start feeling what FPMapping can do for your car.

[lamia2super]

i love that MaxCool

[FORCED AIR]

Originally Posted by Mike@N54Tuning.com

They found in testing the cooling was improved leaving the fan on even at higher speed. I think at some speed they programmed it to turn off. Might be 80mph or so. I would have to check with BMS.

Mike

Found out...on at all speeds...haven't gotten enough highway testing done yet so it may have a speed shutoff in the future. But for now it just shuts off based on temp and if over 40% throttle.

[gsmurf]

Does the engine need to be running when updating firmware?

[rmdvrs]

Originally Posted by gsmurf

Does the engine need to be running when updating firmware?

No, engine should be off. Dash lights on, engine off.

[tofu-]

Originally Posted by rmdvrs

Terry told me to set the FPMapping (was FPsafety at first) to 90 I have been loving the car.

this confuses me a bit, as according to the release notes, 90 is the default.

unless the default was some other setting until this update?

[rmdvrs]

Originally Posted by tofu-

this confuses me a bit, as according to the release notes, 90 is the default.

unless the default was some other setting until this update?

There was no default previously. The value was set at 0 which is why Terry said the previously unused FPSafety will now be called FPMapping and the default value is 90 meaning it's active while a value of 0 means it's the stock mapping.

[tofu-]

Originally Posted by rmdvrs

There was no default previously. The value was set at 0 which is why Terry said the previously unused FPSafety will now be called FPMapping and the default value is 90 meaning it's active while a value of 0 means it's the stock mapping.

ah, sounds cool.

they don't seem to delve into it much over @ n54tech

[Tim Cuculic]

So there's no new map guide? The maps are the same? Didn't you add a map 6?

[Irishace]

This really is an awesome update.

[rmdvrs]

Originally Posted by timcuculic

So there's no new map guide? The maps are the same? Didn't you add a map 6?

Same maps, nothing has changed. Map 6 has been there forever, nothing new, but I think Terry added meth integration to it too so maybe that's what you mean or maybe your thinking map 3, the progressive meth map. The only other things that are relatively new, other than whats in the list, are the CPS and Fuel settings but that's if you have the CPS module or know what your doing when messing with fuel.

[Mike@N54Tuning.com]

Originally Posted by gsmurf

Does the engine need to be running when updating firmware?

engine off, full power on.

Mike

[Mike@N54Tuning.com]

Originally Posted by timcuculic

So there's no new map guide? The maps are the same? Didn't you add a map 6?

maps are similar to the previous versions, but now you can add meth to map6

Mike

[Sedanboi]

whoa not bad Mike!

[Ilma]

Originally Posted by Mike@N54Tuning.com

Water pump and fan will run at 100% duty when water temperature is between 160 and 202 degrees F.

At 203 degrees F the DME ignores the fan command but appears to continue to overrun the water pump. We'll keep working on finding a way to extend the fan range upward to make the feature more useful.

Mike

That's pretty interesting......

When I had my turbo's replaced after yr 1 of ownership they also replaced my water pump because there were some metal shavings in the housing.

It looks like BMW is running that water pump overtime so having the fan kick in sooner sounds like a good idea.

But the fan is pretty loud at full blast......is that what 100% duty cycle is ?

[335i 07]

Terry,
Would you recommend running max cool all the time even for daily driving. Temps here in Mississippi are in the mid 90s and my 1/07 production is without an oil cooler. It seems like I have around 10-15 deg drop in oil temps with max cool on.

[ShyGuy]

The fan is quite noisy with max cool..i couldn't stand it