Well, I did the seafoam thing yesterday and all I have to say is wow....I knew my motor was dirty but not THAT dirty. But, it does work and I feel a few gains but nothing really special. Idle is perfect, Vtec is loud, and my gas mileage actually increased a little. I reccomend this stuff to anyone. The whole project costs about 30 bucks (seafoam, oil, treatment, and spark plugs) but it's worth it. Do it!