T O P I C R E V I E W
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fredfifty
Member # 10320
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posted
Has anybody failed the visual with UD pulleys (polished, blue, red, etc other than black) when getting a smog check?
gauging if i should find stock ones and change them out.
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ALMOST STOCK
Member # 10085
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posted
I've had the polished aluminum UD pulleys on my car since 2002 and I've passed smog every time it's been required.
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Martinna
Member # 12493
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posted
A smaller crankshaft pulley reduces your smog pump air flow by spinning your smog pump slower. Smog at idle can be affected. It has less effect at higher engine speeds.
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hidnn0s
Member # 13845
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posted
No, you will not have an issue with passing smog due to the U.D. Pullies
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Martinna
Member # 12493
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posted
U.D. pullies might slightly lower your smog numbers by reducing load on the engine. Less load causes less emissions if the tune is right.
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