Quote:
Originally posted by mbtoloczko
Generally, keeping the heat in exhaust gases is better for performance as it keeps up the exhaust gas velocity and scavenging effect. Keeping the gases hot is also necessary for proper cat performance. Also, the heat shields may help to keep the exhaust system from heating up the tranny and the car body.
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i dunno you made it sound pretty important. and im talking an entire exhaust setup, from the headers. im sure nobody has tried sheilding an entirely new system and finding results on perf losses/gains. i hope im either very right or very wrong here.....