i use wenol metal polisher for pots and pans. available at williams sonoma.
best part is that not only does it clean the surface very well, it leaves
behind a protective film that can withstand hot temps (pots and pans duh).
surprise your girl/wife by telling her you MUST to go to williams sonoma...
like now. lol
also get a better flowing intake or vtec controller...your a/f is rich.