1991 Grand Prix trouble


Old 08-04-09, 12:53 AM
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Join Date: Aug 2009
Location: Minneapolis, MN
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Angry 1991 Grand Prix trouble

I recently took off my clogged "CAT converter" and put in a brand new Cherry bomb glasspack to fit in where i cut out the cat...My car cannot rev past 4000rpm now, it has half the power it had b4 the cat converter was clogged...i dont know where to go from here...please help me could it be the O2 sensor?
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Old 08-04-09, 02:18 PM
nightowlpunk's Avatar
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I am far from an expert, but you may have to put a cat in, so the car's computer will be happy and put the glasspack behind it.

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