I have read a pile of threads on how to make the reading from the LM1 and TS align. Here are a few data points:
With AFR at 14.0, voltage to TS is 3.3-3.5 volts
TS reads 16-17 afr
I have run the "Calibrate AFR" process
If I understand correctly my voltage should be close 2.45 at 14.0. I attempted to access the LM1 with the software and set it up differently but I cant set the lower end correctly for the calibration. Any suggestions? I think the issue is the LM1 is not sending out the correct voltage for TS to read.
Sorry for the re-tread of a questions but I could not find the solution.
Thanks!
LM1 vs. TunerStudio
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Re: LM1 vs. TunerStudio
How is your LM1 grounded?
Dave P, London UK.
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kjones6039
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Re: LM1 vs. TunerStudio
I don't think that is correct. Actually 14 afr should be ~1.98 volts. 2.45 volts would be ~15 afr.If I understand correctly my voltage should be close 2.45 at 14.0.
14.7 afr = ~2.35 volts.
Be sure that your LM1 calibration matches the calibration table used in TS.
Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
Re: LM1 vs. TunerStudio
I was careful to get power and ground from the same place as the MS. I used the alligator clip method I read on here and have the + clipped to the relay board key on power and the - is clipped the my ground junction for all engine/MS grounds.