i am getting cel 71 i was wondering what does that mean? i am running a bottom built ls motor with high compression pistons. it runs fine with an ls ecu but i am trying to pass emmisions and trying to run my stock 98 lx civic ecu. will running my civic ecu ruin the motor?

 

Misfire on cylinder #1

Start by checking your spark plug, spark plug wire and cap for wear/ damage.