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I just removed the CAT frm my truck and seems to smoke a lot of blue at cold start up. also does at 2500 and above nutral rev. is this bad?
2006 6.0l by the way! |
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I think its normal, mine did the same thing for a while, without the cat there is more fumes and crap like that coming out the exhaust.
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Same here, had that happening during the winter when it was really cold out.
-BG06. |
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I left the cat and cut off the muffler. Did you guys do just the opposite? Whats the differance?
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