Ok I had a 93 civic ex auto that i swapped in a b16 and converted it to manual. My ecu was chipped using uberdata for the swap and now I am putting that same engine, a little built into a 00 ex. No big upgrades other than lowering the compression to 9.6/1. Brand new dizzy, plugs, wires, etc. and it sounds like it is misfiring. Will die off and on at idle, and idles weird as well, before and after warm up. We were thinking the reason might be the ecu was damaged when i flipped my other car but dont know yet. We had to convert this engine to obd2...but any ideas let me know please.

 

Try a different ecu.

 

u must have rebuilt the motor since u lowered compression did u set the timing belt up right i think that is the problem w/my rebuild cuz the oil pump i bought did not have a timing mark on it like the oem one did so check that out is the misfire coming through a code

 

only code i have showing is one for the o2 i'm missing in my test pipe

 

o2 problem installed and its still saying that o2 is bad...? checked timing and firing order and thats all good.....any other ideas, we are lost