I'm contemplating upgrading to the v1.10 firmware in my newly installed LC-1.

What LC-1 firmware are you using, and is it working well for you?

 

Just got mine up and working, I'll have to look and see what version I'm running.

 

I switched to the 1.1 last year......
The sensor heats up faster & IIrc the cal button needs to be held down longer to get a free air calibration.

 

ive been running 1.1 for ages..

do it - you wont regret it

 

I saw quite a few negative reviews of the 1.1 firmware on the LC-1 forum. No problems?

 

really?

none for me...

 

..

 

I havent upgraded mine either. Are there any other benefits besides the faster heater?

 

Requiring the calibration button be held down for 10 sec is supposed to reduce the chance of ground offsets causing the LC-1 to do an unintended sensor calibration. I've heard that the 1.1 firmware sometimes results in erratic AFR readings and difficulting connecting with the LC-1 using the serial out.

I talked with Klaus on the phone about calibration issues today, and he said that another solution is to use a green LED which requires a higher voltage to operate. I will be trying this first. He also said its definitely best to choose a power source that is off when the engine is cranking.

 

I have one of the older LC-1/LMA-3/XD-16 chain and 1.10 gave me E8 errors, warm up got stuck at 99 sec for 15 more seconds and would give whacky AFR on the first WOT pull, 2nd and more then would be OK Went back to 1.0 and everything was normal.

 

accidental calibrations is the big one for me.

and when I say accidental I mean the damn LC1 doing calibrations by accident, not me pushing the button hehe

yeah you can always downgrade.

also check that LMprogrammer can set and READ back the settings before and after the flash... that way you know your serial connection was ok during the flash..

ie
lc1 on
load lm programmer
- everything looks ok?
flash new firmware
lc1 off
wait wait wait
lc1 on
load lm programmer
- everything looks ok?

I reckon some peoples problems came from the serial being dodgey!

 

Just got my hands on some 2 V and 5 V LEDs. Will probably wire in one of those soon to see how that goes.

 

so what is the aim with using higher voltage LED's?

 

Sensor calibration is triggered when the LC-1 sees a signal on the black calibration wire that is within 1 V of ground. The red LEDs that come with the LC-1 can operate with a voltage drop of almost as low as 1 V, and if there is any ground noise, it can be enough to trigger a calibration event. (I forgot to ask Klaus why then did they include such an LED.) A higher voltage LED will keep the black wire further above ground making it pretty much impossible to trigger a calibration run by this unintended method. The 10 sec hold-down time with the v1.1 firmware should prevent this as well unless the LED is operating really close to 1 V.

A second way that a calibration can be triggered is if the LC-1 memory gets wiped out by a low input voltage. This can happen during engine cranking if the LC-1 is set to be powered during cranking. Mine is not, so hoping the 5 V LED will solve the issue for me.

 

Update: Turns out that my car is losing all calibration data on occasion at somepoint during the startup or shutdown. Spoke to Klaus at Innovate, and he said that this is due to a batch of bad processors that got into their LC-1s. So the problem is not related to ground offset. I asked whether a power supply filter might help, and he said that it was very unlikely as the LC-1 already has a very good power supply filter. Innovate is sending out a new unit.