[Gasoline Fumes]

The XFi camshaft and a taller final drive will probably make the most difference. The XFi final drive is 3.79, which is also found in the 1995 and newer 4-cylinder Metros and Swifts. The 1989-1994 SOHC 1.3L 4-cylinder cars had an even taller final drive of 3.52, but they're hard to find. Standard final drive in the 3-cylinder cars was 4.10, or 4.39 in the convertible and 1995+ 3-cylinder Metros. I'm in the process of converting a normal 1994 Metro into better than an XFi.


I don't think the XFi was lighter than a base model 3-door 5-speed Metro with no A/C. These are the differences that I'm aware of:

Camshaft - less lift and duration

ECU

Hotter thermostat and radiator fan switch

One compression ring per piston instead of the usual two (The specially-designed "gapless" single ring is no longer available new)

Taller final drive - 3.79 vs. 4.10

No passenger side mirror (I think they came without them)