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alright guys....new here and learning...i got a 94 formula lt1 that i want to tune.I bought a ftdi chip for the usb hookup...here's my question.the rx tx prongs ...where do they go to the obd1 (which pins) and which prongs are the rx tx on the ftdi... any other info you can provide would be appreciated...thanks guys...
Don't know the answer, but I suspect member
@GaryDoug
does. In the meantime see if this helps:
http://www.firebirdnation.com/forums...-for-under-20/
On the car OBD1 connector, ground goes to pin A. TXD and RXD of the cable both go to pin M. You can find out which wire of the cable is TXD and which is RXD by opening the USB end case. Usually they are white and green or orange and yellow.
LTXtech has locked out my other username for some reason (they have my password wrong) so I had to make another one.