I recently installed Accel coils, BBK MAF 30lb calibrated, 30lb fuel injectors and double platinum auto lite spark plugs. i ended up getting a misfire on the #5piston the sounded like **** when driving and loss of power and a code for the bank #2 system running too lean. I changed the plugs and misfire still there, coils and prob still there and replaced fuel injectors and then the prob seemed to go away. So when i replaced everything back was pretty much back to stock. what couls have gone wrong or was it a bad fuel injector and as for bank #2 running too lean, im thinking its just the O2 sensor. any ideas?

 

Accel coils are known to take a ****. Put a stock one back in it on cylinder 5 and start it again.