1uz-fe from a 93 sc400 overheating, missing, and smell coming from exhaust. Haven't run long enough to see what color exhaust is, but won't run at idle. I have to keep the engine running which is a major pain to do with the maf sensor unplugged.
If the smell is like rotten eggs you have a cat converter that has failed. If it is another smell (can't tell because I don't know what kind of antifreeze you have) but you will see while smoke it sounds like you have a blown head gasket. If the gasket blew badly enough, you may be loosing compression on one or two cylinders. which could cause it to run poorly. and having your map sensor unplugged doesn't. help.
Hope this helps.
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