i have a 90 civic turbo with obd1 p28. at the track today i switched my chip and it ran shitty now it won't run at all even with a different ecu. check engine light comes on as soon as it is turned over. when checking code it doesent flash just stays solid. please help me its my only car. thanks

 

Bad burn, put the chip in the ECU the wrong way...maybe your chip went fucked...

lastly, maybe you fucked your ECU

 

Bad solder joint or loose solder joint. Check the conversion harness for loose connections. That was Hotrex's problem.