i have 2 intakes that i am tryin to sell and they need to be cleaned. they have a few years of crap on them and am trying to make them as good as i can to sell. i didnt know where else to post this topic , but can any of yall lend me a hand on what i can do this with. thanks. i have tried oven cleaner, de greaser and rim cleaner and nothing really cuts down the stuff.