LC-1 Question

[LiquidX]

Just wondering about this. I just installed my LC-1 with the DB gauge and also wired it up to my ECU with ECMLink v3. Comparing logs with my gauge reading it's off by a couple points. There were times where the gauge read say 14.7 and my log read 15.1. Anyone else experiencing this and should I rely on my ECU reading over the gauge reading as it could possibly not be 100% calibrated at the gauge input?

 

[tragdor]

Sounds like this thing may not be calibrated properly between the two systems. First, check your output for both analog wires on the LC1 using the LM Programmer software. Plug up to the LC1 and see what your AFR's are scaled to. Use the LC1's manual for this. Then, look at what this is set to in the ECMLink software. The two should be scaled the same. I'm sure you'll see the settings when you check. Good luck!

 

[turbosax2]

I prefer to use the Techedge option in ECMLink, and reprogram the LC-1 to the settings specified here:
innovatelc1orlm1install [ECMTuning - wiki]

It gives better resolution because a smaller AFR range is used. Programming the LC-1 can be problematic sometimes though. Make sure to read the "Version check" section in that link.

This may help your issue.

 

[tragdor]

I prefer to use the Techedge option in ECMLink, and reprogram the LC-1 to the settings specified here:
innovatelc1orlm1install [ECMTuning - wiki]

It gives better resolution because a smaller AFR range is used. Programming the LC-1 can be problematic sometimes though. Make sure to read the "Version check" section in that link.

This may help your issue.

You guys definitely know more about ECMLink, but as far as the LC1 is concerned, I don't really think reprogramming the LC1's outputs are that difficult. You plug in, launch LMProgrammer and select the output you want to program. Then adjust the AFR to voltage. So, you need 9:1 for your base (0v), and 19:1 for your peak (5v), adjust the numeric fields accordingly for both the outputs if needed. It's really not bad at all. Let me know if you need me to elaborate.

 

[turbosax2]

I know it shouldn't be bad, but we had issues with the v3.19 LM Programmer not saving the changes. We contacted Innovate about it and they recognized our problem as a known issue. It may be fixed now, I'm not sure. Changing the settings in ECMLink is no issue at all.

 

[tragdor]

I know it shouldn't be bad, but we had issues with the v3.19 LM Programmer not saving the changes. We contacted Innovate about it and they recognized our problem as a known issue. It may be fixed now, I'm not sure. Changing the settings in ECMLink is no issue at all.

Oh okay, well that makes more sense. I believe there is a later release of the LM Programmer. I'm on v3.27. You might try upgrading the version from the Innovate website. Then again, if it works using ECMLink, it may not really be necessary anyway...

 

[turbosax2]

That new version might work, I'll have to try that next time. Scott came over today and we changed the settings using v3.19 and all went smoothly. We used 0V=9afr and 5V= 18afr, then logged as Linear Boost in ECMLink. The readings from the gauge to ECMLink still didn't match perfectly, but I believe it is just due to some lag in the computer (we were using my slow laptop). They were pretty close though.

 

[LiquidX]

Yes, Eric really helped me out today, well yesterday, and we got a lot done. The readings between the DB gauge and the ECMLink reading may be off but the changes are too fast to be 100% sure. Overall I'm pleased with the results and I think there may be a way to fine tune the readings more to make them read the same but that'll be something to deal with a little more down the road.

As Eric said, it's possible that there is extra resistance going to the gauge and/or ECU causing a change in values between the two. As long as the ECU reads and registers the correct value that's all that matters. That's the one that all the tuning is based off of at least.


But please, if anyone else has experienced this phenomenon, chime in and post what you have or haven't done.