Ok i have a b18b1.... I had stock injectors in my car then i left my car at my shop and someone desided to put 440 rc injectors in my car.. I didnt find out till after i started it up and it sounded like garbage. now i took them out and put in the stock ones and it doesnt want to run right. sometimes runs on three cylinders then two then three again. i replaced the spark plugs but no change... any ideas on how to fix this?