Recently installed a stage 3 clutch with a light weight flywheel, the car started right up after. Car started up for about two days. On the the 3rd day the car the car just stalled out while idling. Started back up but stalled out faster than the previous time. Can’t get the car to start now, the dash lights up radio windows all work. Unfortunately my car is missing the center bezel so I can’t see wether the security light is on or not. When I pull codes I get evap codes.....that shouldn’t cause the car from not starting.....however I have a creader scanner which allows me to check engine, abs ,airbag, transmission faults. When I try to manual check engine faults it wont allow me to connect with the ecu it just shows error. So I changed the ecu still no start just cranking without no spark. when I checked the engine faults it allowed me too which the other ecu wasn’t, it pulled codes for nats malfunction...... my thing is are the dealers the only one who can fix this problem?.....