Exhuast Port Sleeves
#2
Those sleeves get Very hot to burn off extra exhaust gases. A emissions thing. They can be removed, although I've read to be a diffacult thing. They don't really restrict much. Removing them won't benifit enough for the work requird. (Please forgive my spelling) If you really don't want them I sugest a P90 or N47 head. As they don't have them.(correct me if I'm wrong) all in all. Leave em be. There fine.
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