with a sufficient sized hook (strength/length) try to pull it out after a good drive (hot!)... it does restrict flow but not that much unless you're running a big turbo and high pressure. if you have a 4 banger NA, depending on the size of your pipe; you might wanna keep it in there to help out with the back pressure. as far as cleaning... it's always gonna be black so why bother with a detailed cleaning. unless you got thick carbon residue, i would just scrub it down and hose it off.
hth!





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