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Tuner in Training
I purchased the power/IO cable for the 30-0300
Going to plug it into the back of my 30-0334 and just use the analog inputs on that new cable.
No pinning or wire hacking should be necessary
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Advanced Tuner
Nice. a couple of note, when using the 300 harness on the 334 firmware.
1. The serial output of the 334 gauge is not great. Some report that it will not connect. reflash for better serial.
2. The CAN output for the 334 gauge is in OBD2 format. not the AEMNet format that the prolink can read.
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Tuner in Training
Right on thank you, I will keep that in mind. Is there any tips for correcting voltage drop offs with analog? Going to use my AC pressure sensor on my GTO (A/C has been deleted.) I also want to bring it in as Lambda AFR is a thing of the past I keep hearing.
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Advanced Tuner
Good news on that front
The AEM X-series gauges have compensated differential analog outputs. If you connect the Analog- wire ( brown, i think ) to the ground of the ECU, the WB will use that to nullify ground offset between the controller and the ECU/logger.
Lambda really is the way to go, especially with things like E85 and FlexFuel, in general, making AFR into upper division math 
The analog output of the WB is always fixed as lambda 0.58 - 1.22, IIRC
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