impala exhaust butterfly
April 2nd, 2006, 6:36 PM
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impala exhaust butterfly
is there a bimeatl spring that opens when hot or is it just a spring that stays closed all thee time untill the u reve up the engine?
June 11th, 2006, 7:34 PM
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RE: impala exhaust butterfly
that is what is called a heat riser, and it helps direct heat up towards the carburetor. When we had our exhaust done, the guy got rid of it because it was all rusted/pitted and it runs perfectly fine without it
