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lanbrown · 04-24-2015, 08:30 PM

Almost any vehicle built before cats were used. When first started, they would have a fast idle before settling down to the normal idle speed. So, the cats cannot be the reason if fast idle existed prior to the introduction to cats.

04-24-2015, 08:30 PM	#11
lanbrown Private First Class 6 Rep 129 Posts Drives: BMW X5 Join Date: Dec 2014 Location: Austin, TX iTrader: (0)	Almost any vehicle built before cats were used. When first started, they would have a fast idle before settling down to the normal idle speed. So, the cats cannot be the reason if fast idle existed prior to the introduction to cats.
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