Spurt of smoke from exhaust near redline at WOT [99 S70 T5]

Levinicus · Post by **Levinicus** » 16 Jun 2017, 21:02

I noticed some smoke from the exhaust while under full boost. It happens suddenly as the engine nears the redline, at around 5500 rpm. A friend followed me to get a look at it and he noted that it smelled like unburnt fuel. I have no warning lights and no codes. What could this be? The PCV is good (as per glove test) and I get no smoke at full boost below 5500.

Thanks,
Alex

Post by **j-dawg** » 16 Jun 2017, 21:06

What color is the smoke?

Levinicus · Post by **Levinicus** » 17 Jun 2017, 22:10

My friend said it was grayish and smelled super rich.