ORIGINAL: sfar785
no, i tune by performance, not heat....but i get a little nervous when the motors get that hot, but if it's running too rich when the temp is low, i'll lean it until it runs right...so sometimes i'll go up to 280
High heat would made me nervous to. Then people I race with just kept telling me to lean it out and not worry about the temp because at 230 it would just sputter. I've hit 290ish in a 30 min main before because my back plate was leaking. Hasn't hurt the engine at all.