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snowfizz

snowfizz 5/19/2012

2001 Chevrolet Impala LS 6 Cyl 3.80L

Engine

Cars rpm are going up and down and losing power while driving

While driving around on streets not highway. I just back from a trip that I drove 1500 miles only highway. At 80mph most of the way. I have had some electrical problems do to HIDs highs and lows. After market exhaust flow masters when from single to a dor. And a k&n intake kit. And a high quality stereo system. I'm getting the following codes.
B1478
P0420
C1232
p1811
B2532
B2602
B2650
It has 99026 miles on it. I run synthetic oil. And a k&n oil filter. Let me know of any ideas. It does this randomly and most of the the only most of the time while driving

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