The thermostat serves a few purposes. It helps the engine warup faster on initial startup and it also keeps the engine in the optimal heat range. You really dont want a cold engine. Cold engines use more fuel, get stuck in open loop which changes fuel calculations and timing strategies, causes premature parts wear and sludges oil. Also, slowing down the coolant flow allows for proper heat transfer at the optimal running temperature. Sure, if you remove it, it'll run cooler, but that's not really good. The slower flowing coolant will transfer heat more effectively at full operating temperatures. And actually, you want to raise the boiling point, not lower it. If you lowered it, the coolant would boil sooner, which causes cavitation and other bad things. Thats why you have a radiator cap that puts the system under pressure. For every PSI, you get a 2 degree raise in the boiling point.

91 awd: 60-1, 880's, E-Prom, etc.
93 awd: JDM 6 bolt, K&N, full exhaust, Wally 255, otherwise stock.

R.I.P. the original "Factory Freak"
15.5's with short ram and catback only
1996 RS 5-speed