Speeduino

Hi I have a miata NA 1.6. 1990 I have installed a 30-0300 x-series wideband 450cc injectors. can someone help me . the car works fine, I just have to keep the laptop connected the engine stops if I do not use the laptop it looks like it's losing ignition because dashbord clock not working when does that after it stops it starts very hard. but it works at only idle if I want to leave the engine dies again can be the sensor on the clutch pedal because I can't use the option to decelerate fuel cut off. if I activate it, it does the same thing as with the laptop disconnected
if anyone can help me thanks