service for classic fast sys.

You should send it back to FAST.

Also, I moved this to the aftermarket ecm forum.
 
Send me a PM if you wish and let me know the nature of the problem. I may be able to help out.

Also sent you an email.
 
service for classic fast

data log works
can read from pages---fuel, spark,etc. attempts to change idle rpm. kicks device off line.
 
data log works
can read from pages---fuel, spark,etc. attempts to change idle rpm. kicks device off line.

Hmm. Have you tried another laptop by chance?

If the problem happens with another laptop, and you are confident that your wiring hasn't been affected by something, it sounds like the RS-232 driver is misbehaving. Let me know if you are able to test things with another laptop and double-check wires.
 
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