I keep getting a P0300 random misfire code. Both the E-side and T-side have been turned off, but it still sets a code. I don't know what to do. Anyone have any suggestions?

Thanks,
Jon

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A4, 3.73 gears, Flowmaster Cat Back, LT4 KM, Prostars with 275/50/15 BFG Drag Radials, K&N FIPK, TB Bypass, Lakewood LCA’s, JBA headers, LT4 Hot Cam kit w/ 1.6 RR’s, LT4 Timing chain, hollowed Cats, Ed Wright Programming, Spohn torque arm, 52mm TB, BMR SFC's, Yank SY3500