I did a little research on Carparts.com
It seems that they list the same camshaft part number for the XFI and LSI for all the 1.0 Metros.
The ECU/ECM was a little harder to track down. The 1990/91 XFI & LSI list the same ECU and distributor/ignition module parts numbers. The 1994 XFI & LSI share the same part numbers as well but are different than the 91 and earlier cars. Carparts.com didn't list any ECUs for the 1992/93 metros so I don't know what year the change was.
I'm getting the 93 XFI anyway. I am still curious as to what the engine difference is. Are there different chips that plugs into the ECU that may be different for the XFI and LSI?
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