p0304

My car is running lean and rich. Bank 1 STFT is 1.19 and Bank 2 STFT is 0.78. It’s giving me misfire codes P0300 and P0304. My car has catless headers, ported gt350 intake manifold with IMRC lockouts, gt350 TB, and 47 lb injectors. Starts up kind of rough but no loss of power and idles higher...