Check your turbo compressor for looseness and erosion that can result in low boost, next check your intake air system from turbo to heads for leak with a smoke machine. Both of these can give you low power, poor mpg, black smoke, low peak
Really odd the CEL is on, but no codes. There should at least be a history code I would think.
Tuesday, July 8th, 2008 AT 4:49 AM