[Rob@Cobb]

Hello Everyone,

I hope those using the new beta are enjoying the changes. Below are basic descriptions for the new monitors we added to the AP. As we go along Jason, our new BMW tuner, will be adding min, max, and a usually range for healthy running. Enjoy.


“Battery Volt.” -> Battery voltage as determined by the battery voltage input to the ECU.
.
“RPM” -> Engine speed in crankshaft revolutions per minute based on the crankshaft position sensor.

“Vehicle Speed” -> Vehicle speed based on the vehicle speed sensor.

“ECT” -> Engine coolant temperature based on the engine coolant temperature sensor.

“CHARGE AIR TEMP (CAT)” -> Charge air temperature, post intercooler based on the charge air temperature sensor.

“OIL TEMP.” -> Oil temperature based on oil temp. sending unit.

“MAF” -> Mass airflow as determined by calculation of the ECU.


“Accel Ped. Pos.” -> Accelerator pedal percentage as determined by the accelerator pedal position sensor.

“TPS Act.” -> Throttle (blade) position percentage based on the throttle position sensor and calculations made by the ECU.

“Load Requested” -> Engine load, in mass per crankshaft revolution in cylinder, as requested by the ECU.

“Load Act.” -> Engine load, in mass per crankshaft revolution, as calculated by the ECU.

“Baro Pressure” -> Barometric pressure based on the barometric pressure sensor.

“MAP” -> Manifold pressure (Absolute) based on the manifold absolute pressure sensor.

“Req. Boost Abs.” -> Requested boost pressure by the ECU in an absolute value. (PSIa)
“Boost Mean Abs” -> Filtered Boost pressure used by certain ECU functions needing stable boost readings.

“Boost Set Limit” -> Output used by the ECU for table calculations.

“Boost Setpoint Factor” -> Value used by the ECU for table calculations

“WGDC After PID" -> Final waste gate duty cycle after ECU PID control system calculations.

“WGDC Base Value" -> Base waste gate duty cycle before ECU calculations.
“WGDC Bank 1-2" -> Bank 1 and Bank 2 wastegate duty cycle as determined by the ECU's boost control logic. This value is manipulated in order to hit the boost target.

“Timing Cor. (CAT/ECT)” -> Ignition timing correction values for charge air temp and engine coolant temp compensation.
“Cyl 1-6 Timing Cor” -> Individual cylinder knock correction as determined via knock sensor voltage.

“Knock Volt Cyl. 1-6” -> This signal is interpreted by the ECM’s knock control strategy which alters ignition timing.

“Timing Cyl. 1-6” -> Individual cylinder ignition timing after all corrections and compensations have been made.

“Torque Limit Active” -> Displays which system is in control of torque limiting system.

“Torque Limit Modifier” ->

“Fuel Mode” -> Current ECU state fuel mode.

“STFT (Bank 1-2)” -> Short term fuel trims for bank 1 and bank 2.

“LTFT (Bank 1-2)” -> Long term fuel trims for bank 1 and bank 2.
“Lambda (Bank1-2)” -> Air/fuel ratio based on the front oxygen sensor for banks 1-2.

“Lambda Req. (Bank1-2)” -> Requested Air/fuel ratio for banks 1-2.
“VANOS In. Req. (CRK)” -> Intake valve timing set point via cam position sensor.

“VANOS Exh. Req. (CRK)” -> Exhaust valve timing set point via cam position sensor.

“VANOS In. Act. (CRK)” -> Actual intake valve position via cam position sensor.

“VANOS Exh. Act. (CRK)” -> Actual exhaust valve position via cam position sensor.

“Torque Output” -> Estimated torque output as calculated by the ECU.

“Torque Requested” -> Requested torque output calculated by the ECU.

“Fuel HPFP (Req.)” -> High Pressure fuel requested value calculated via the ECU for the high pressure delivery injection pump.

“Fuel HPFP” -> Fuel pressure at the injectors based on high fuel pressure sensor.

“Fuel LPFP (Req.)” -> Requested low fuel pressure value as calculated by the ECU to deliver fuel to the high pressure pump.

“Fuel LPFP” -> Actual fuel pressure being delivered to the high pressure pump.

“IPW Cyl 1-6”-> Final calculated injector pulse width for injectors 1-6, as determined by the ECU.

[mithiral67]

I hope someone is drinking and working on a Friday.

[Rob@Cobb]

Originally Posted by mithiral67

I hope someone is drinking and working on a Friday.

Haha, the GF is out of town, the race car is ready for tomorrow, and there is infact a beer next to my keyboard.

[mithiral67]

At a boy.

[Bleep]

Can't wait to go out and do some datalogging with all these new monitors. How accurate are the torque output monitors? Would a stock tune show close to 300lb-ft?

[vasillalov]

Someone sticky this please!

[vasillalov]

Originally Posted by Rob@Cobb

“Fuel HPFP (Req.)” -> High Pressure fuel requested value calculated via the ECU for the high pressure delivery injection pump.

“Fuel HPFP” -> Fuel pressure at the injectors based on high fuel pressure sensor.

“Fuel LPFP (Req.)” -> Requested low fuel pressure value as calculated by the ECU to deliver fuel to the high pressure pump.

“Fuel LPFP” -> Actual fuel pressure being delivered to the high pressure pump.

“IPW Cyl 1-6”-> Final calculated injector pulse width for injectors 1-6, as determined by the ECU.

This is brilliant! We'll be able to tell if the fuel pump is getting ready to break down again.

[secretsquirrel]

This is good stuff, Cobb.

[BMWsky]

Originally Posted by vasillalov

This is brilliant! We'll be able to tell if the fuel pump is getting ready to break down again.

I couldn't agree more!!!

[jeff2.0t]

@Rob

Any ETA for the N55? Why not showing us few pic on the N55 forum?

[dzenno]

Originally Posted by vasillalov

This is brilliant! We'll be able to tell if the fuel pump is getting ready to break down again.

Not only that, the main thing is you'll see if/when you really do hit against a fueling limitation without having to claim it based on AFRs...piggy tuners claim fuel system limitations now based on seeing lean runs on dynoes and logs while not realizing or saying that it actually might be because they're not in the dme "requesting" the dme run certain values...with this ability of logging requested vs actual values you'll see clearly when/if there really is say a fueling limitation at the 500+whp mark...from what I've seen so far it's very hard to say that those claims are true...maybe at 550whp but 500 definitely not

[jippii ensio]

Originally Posted by dzenno

Not only that, the main thing is you'll see if/when you really do hit against a fueling limitation without having to claim it based on AFRs...piggy tuners claim fuel system limitations now based on seeing lean runs on dynoes and logs while not realizing or saying that it actually might be because they're not in the dme "requesting" the dme run certain values...with this ability of logging requested vs actual values you'll see clearly when/if there really is say a fueling limitation at the 500+whp mark...from what I've seen so far it's very hard to say that those claims are true...maybe at 550whp but 500 definitely not

This is a good point. Tuning for all the parameters provides more refinement and ways to tune than intercepting just a part of the signals and thus adjusting only part of the parameters that way. Actually, piggy tuners should probably try to solve the fueling problem by flashing the DME rather than going into the fuel pumps. Both are away from their core competence, but complementing the piggy tune by flashing would be more in the field of tuning.

[korben dallas]

Did the way boost is measured change with v3? I used to see 0 psi at idle, now I see -6.5 generally. I also don't seem to see the high shift spikes, though I'm basing that just on the live data monitor and not pulling logs (yet).

[BMWsky]

Originally Posted by korben dallas

Did the way boost is measured change with v3? I used to see 0 psi at idle, now I see -6.5 generally. I also don't seem to see the high shift spikes, though I'm basing that just on the live data monitor and not pulling logs (yet).

Alright, thank you! I was just about to uninstall my AP and try an older map to see if I was crazy. I used to see 0 or sometimes a slight negative number at idle with a pretty crazy number on the shift spike (19, sometimes up to 20). With v3 I'm seeing -9 at idle and 14 at WOT tapering down to 12 and change closer to redline. The car pulls like an absolute beast, it actually seems to pull harder and better for me than when I was running v2.02 MT map. Granted, I just added a Stett CAI after putting on V3, but WOW it pulls hard.

[mithiral67]

I am now seeing the negative vacuum on idle and car seems to pull the same, but I havent had much seat time yet.

[BMWsky]

Originally Posted by mithiral67

I am now seeing the negative vacuum on idle and car seems to pull the same, but I havent had much seat time yet.

It freaked me out at first because I just installed a new FMIC and CAI so I thought I may have knocked something loose. The thing that had me confused was how strong the car is pulling right now.

[ridin135]

Any z4 news

[Sean@PYSpeed.com]

Very good info! Good Work!

[vasillalov]

I installed the latest firmware and the 3.00 maps last night. Went to authoX today. Tune performed fantastic! Throttle control was much better and I was able to modulate the engine power output much better than with the previous firmware. My "butt dyno" is also detecting A LOT LESS throttle closures and when they occur, they are not as severe!

I don't know why others are seeing problems with the latest firmware, but for me, this is their best so far.

One thing I did notice which is bit interesting: when I really mash on the gas pedal, the instant fuel consumption shows 7mpg. Previously, it used to show 6mpg.

Cobb,
Have you guys messed with anything that would cause this change? I am just curious, that's all!

[vasillalov]

Originally Posted by mithiral67

I am now seeing the negative vacuum on idle and car seems to pull the same, but I havent had much seat time yet.

Huh? Negative vacuum? Wouldn't that be pressure?

Anyway, you should be seeing about 18-19 inches of water VACUUM at idle, regardless if you are stock or not.

[lawwailok]

now i have a question, when we do datalog with these new features, which are important to show in the data to tell how is the car's condition? thanks for the reply and suggestion!

[vasillalov]

Originally Posted by lawwailok

now i have a question, when we do datalog with these new features, which are important to show in the data to tell how is the car's condition? thanks for the reply and suggestion!

Cobb will be posting a "reference manual" for your question soon.