Smoke after car shuts off
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Old November 23rd, 2007, 01:38 PM   #1
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Smoke after car shuts off


I have a 2003 mustang gt with mac cold air intake and the cats are removed and it has flowmaster mufflers. After i turn the car off a white smoke comes out the exhaust pipes mostly the drivers side for a min or two is this because of there being no cats?
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Old November 23rd, 2007, 01:39 PM   #2
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welcome to the forums.

more than likely that's your problem..

you have a bit of unburnt fuel in your pipes since you don't have cats and your exhaust is just burning it.
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Old November 23rd, 2007, 02:01 PM   #3
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+1 ^^^
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Old November 24th, 2007, 12:05 PM   #4
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no cats in cali?,I thought they were emission nazi's
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Old November 25th, 2007, 02:27 AM   #5
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they are emission nazi's I am going to be running an O/R X soon as well, i plan on just switching them back and fourth when emissions comes around with the stock H.
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Old November 25th, 2007, 01:31 PM   #6
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Mine does it too. I have an Pypes Catted X. I notived it only when it got below 50 degrees. I think its because we're running a tad rich, well maybe not you cuz you have an O/R but i think i am bcause i have cats and its doing it for about 10 min after i shut if off. A tune will fix it... the A/F
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Old November 25th, 2007, 02:44 PM   #7
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how dense is the smoke? any smell?
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Old January 14th, 2008, 01:51 PM   #8
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mine does it also its normal with less or no cats
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