I just bought and integra and the cold air intake that has a K&N air filter on it has let a lot of junk through to the throttle body and engine. I cleaned the throttle body and plate and it was dirty as hell! I want to know if all of that got into the engine? I want to know how I can clean the inside if my engine cause I know it is full of carbon buildup and just road dirt and K&N filter oil! What do yall suggest? Some sort of engine additive that you put in and run for 5 minutes then change your oil? Or maybe sea foam? It's a product that you run in your gas, in a vaccum hose that runs directly into the intake manifold. What should I do to clean the inside of my engine?