E83 specific pids

[Tre-Cool]

Guys, is it possible to get some e83 specific pids, just like the e38/e78 etc ones.

Ideally atleast the following pids:
Air Flow Grams/Cyl - using the sae.maf and calculated g/cyl is not accurate
Air/Fuel Ratio Commanded - currently using sae.lambda which seems to work, however im getting enrichment that is much higher than anywhere in the tune. Also possible there are enrichment tables that are missing from the calz.
Intake Valve Temp - doesn't exist for e83 controller yet


I'll might come back with more once I start playing around with the car, but these are my need to have's. :-)

[GMPX]

Actually no I'm afraid to say. The E83 ECM has an encrypted or compressed OS (not sure which it is) so we can't decompile the code to locate the memory address's for such PID's.

[redhardsupra]

Actually no I'm afraid to say. The E83 ECM has an encrypted or compressed OS (not sure which it is) so we can't decompile the code to locate the memory address's for such PID's.

Actually you should be able to tell the difference between the two by measuring entropy on a fixed chunk of bitstream. If you send me an image, I can probably figure it out.

[GMPX]

Actually you should be able to tell the difference between the two by measuring entropy on a fixed chunk of bitstream. If you send me an image, I can probably figure it out.

Actually turns out we just needed to update IDA, they are using VLE on the CPU , not going to go searching for DMA PID data in that code mess.

[Tre-Cool]

What's the chances if any of being able to find out if there is any calls to a specific pcm pin for the ethanol sensor or add them in? (there's a ton of empty pins on the ecu, but I imagine they need to be connected to the specific inputs within the ecu board like the maf?)

Efilive is also missing the capability to turn on the ethanol sensor completely (not that it matters at the moment), using hpt I can turn it on but the ecu then defaults to 100% ethanol and 255hz on the fuel composition input. I've tried blindly using a bench harness setup on my spare ecu and flex sensor on all the unassigned pins and had no change. Mind you I thought it was odd that even when I put the pin to the maf sensor signal pin it still didn't recognise or pickup the frequency.

I thought Perhaps because the ethanol sensor hz is only between 50-150 vs 1800+ for the maf it can't see it. but surely it would still read the lower values? I did just realize that I may need to drop the enable/fail frequencies down though.

[GMPX]

What's the chances if any of being able to find out if there is any calls to a specific pcm pin for the ethanol sensor or add them in?

Next to impossible, you would need a PCB circuit diagram to know where it ends up inside the ECM (CPU or other chip), it cannot be worked out from the code. With all the other ECM's we had the luxury of having a car on each ECM type using the sensor.

[Tre-Cool]

is there any other pid I can use get the equivalency ratio?

found it weird that they have set 14.3 as the lambda value too

I'm happy to help in any testing you might want to try

[GMPX]

SAE.LAMBDA should work, actually that is probably your only option.

[Tre-Cool]

Okay, been nearly a week with the new car and left it stock for the first 3 days to log it in factory form.

Been running it on united's P100 mix (98+10% ethanol = 100 octane they reakon)

Stock they supposably run 10psi, it kinda did at first then it slowly wound it's way up to around 12-13. I'm guessing because it had been ran on cheap 91-95 fuel. Car was 2nd hand with just under 4k km's on the clock.

Anyway, I had a small play with it on the road and then onto the dyno, where I gained a solid 10-12% increase in torque over the entire rpm range bar the top end (which I believe is being restricted by torque management)


On the road with the wideband shoved up the bum of the exhaust, actual is pretty dam close to commanded enrichment, however stock they run them at fat as .6 lambda!!! (as seen on the dyno graph)

Unfortunately my dyno is setup for rwd so I didn't have the cooling fan blowing for any of the runs but I allowed a fair bit of time to cool down between tunes.


Now, compared to the 1.4l turbo, they don't seem to hamper the tune too much in regards to making power initially, but now I feel i'm hitting a missing torque limit or 2 I'm stuck at making a consistent 280~282nm. Which might explain why the stock tune matches the max hp figure albeit at a later rpm.

What's interesting to note is that I haven't changed the duty cycle of the wastegate, yet im making 120-123kpa (17psi) of boost. I've only made a slight adjustment to the commanded power tables and I've played with it in extremes and settled it back down to close to stock. I've found that if you put in a large number in say the 80-100 tps% ranges, it essentially puts a dead spot/time delay at low rpm.


Now I've taken a look at an auto tune for one of these cars albeit in hptuners and they seem to have a whole bunch more torque tables which co-incidently have max torque figures around the numbers im hitting.

I've tried using leaving B7015 Enabled and putting in say 400nm for B7016 & I've also set it disabled and having the torque limit normal set to 2000 and lower to 1000nm(default) and there is no difference. in fact because it's not over-boosting I don't think either is doing anything.

So any chance of getting someone to take a look at the available torque management for the 12654173.calz

I can email in logs/tunes if needed.

[joecar]

So did SAE.LAMBDA show the correct lambda (matching the commanded fueling tables)...?