98 Eagle Talon (eclipse) idle problem, missfire

computer throwing codes p0300- p0304 what could be wrong with this thing? its the 2.0 dohc engine (i know shitty neon engine lol) idles bad and misses randomly on all four cylinders. drives fine and the missing is only noticable when idling. the computer is not indicating the any of the sensors are bad thes are the only codes its displaying. could it be the timing????? engine compartment to interior to Exhaust...

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95 eagle talon tsi problems. rough idle, backfires, and dies DSM 4G63
Just replaced the timing and balance shaft belts. 200 miles later it acts like it jumped time. The Exhaust is smoking because i performed a wet compression test so its burning out the tranny fluid. The engine bay is smoking because it fired up while there was no valve cover on and it covered everything in oil. alternator will not charge. Put on a new alternator and it still will not charge. compression tests good and coil packs are okay. parking lamp wires are all melted up and shorted so i have the front bumper off to access the wiring. looks like i need a new ECU. IF ANYBODY HAS ANY IDEAS PLEASE LET ME KNOW THANK YOU

1998 Eagle Talon TSi Driving
Blitz Fully Auto turbo Timer DC IV Injen Cold Air Intake K&N Air Filter 8lb Fidanza Flywheel Greddy Type RS BOV Greddy Short Throw Shifter Centerforce Dual-Friction Clutch Boostvalve Manual Boost Controller Dave Brode upper Intercooler pipe Walbro 190 fuel pump Complete 3 inch turbo-back Exhaust with Magnaflow muffler Evo III Big 16g turbo Ported Evo III Exhaust Manifold ($800 in port work) Ported O2 Housing and Turbine Housing Aftermarket Halo ring Headlights Oil pressure, Boost pressure, and Air fuel ratio gauges in pillar pod (autometer)

EVO 4G63 oil seal