My car has be turboed for about 6 months, ever sice I installed my turbo I keep getting misfire codes in all cylinders. I have changed my plugs twice(and even closed the gap on them) changes wires, ect. with the same result, I have searched but nothing has really given me a reason or solution to my problem. My question what are some reasons that cause misfire, and why only accur after i put the turbo on? Thanks!!

 

do a cap and rotor