Control module on the distributor messes with the firing order. The passing gear cable messes with my 1st and 2nd gear shifting, also gave me high idle on my 1993 GMC Sierra C1500 5.0 V8 Single cab...

I returned 12 Pin ALDL OBD1 Bluetooth / Code Reader/ Scanner / Adapter I didnt get my money back for aldldroid. They didnt work on my droid or the laptop.

I connected the FTDI FT232RL USB to...