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Thats interesting. The heads on my Notch arent opened up so it probably wouldnt make much difference, but it would be nice to get a bigger exaust and still have heat. Its too cold in NY not to have heat in your car, even it you dont drive it in the winter. Keith\ > I know for my 2.0L, heat exchangers (a.k.a.heater boxes) were VERY bad for the > engine as they were too small and caused the engine to get hotter than it > should. My heads were opened up to flow more air. When I put the 1.5" exhaust > on (J-tubed, thus no heat exchangers) the engine cooled down noticeably! It > also revved more easily and the power increased. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org