I have a 6870, Moates aldu1, in an 85 Vette. I can see data with the 10k switch set but not in open. Problem is 10k mode locks idle at 1000 and jacks the timing way up. Useless for data logging. I've found things about 20k resistors or different settings in the adx but nothing that directly points at my 6870. Wanting to burn my first tune but need good data. Any help?