"Performance" t-stats open too soon to really allow the engine to get to operating temp at all in winter, or soon enough in summer. In winter/fall the heat won't work worth a damn becuse the t-stat opens too soon/stays open too soon.
Trust me as long as you have a good OE t-stat, your fan(s) work, and you have no leaks there's plenty of cooling capacity from the stock cooling system. My B18B runs under 1/2 even with a stock Civic radiator.
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Trust me as long as you have a good OE t-stat, your fan(s) work, and you have no leaks there's plenty of cooling capacity from the stock cooling system. My B18B runs under 1/2 even with a stock Civic radiator.