I recently removed all spark plugs to see how they were burning. The aft trailing plug BUR9EQP looked like a new plug while the others looked as if they were burning a little rich. The electrode for the trailing plug was not worn in any way. The plug port also looked as if it wasn't firing or burning any fuel compared to the other ports which were black.
The FD runs fine with no starting, idling or any other abnormalities. I bought the car with 82K. No engine rebuild according to the last owner. I installed a DP, Cat-back, intake, and a boost controller to maintain a 11-8-10 boost pattern. Researching the boards and will continue troubleshooting. Comments/Suggestions?

 

it's hard to judge how the look of a spark plug can tell the A/F ratio of your motor. More then 3/4 of the time those plugs arn't seeing full boost unless you drive like a madman every time you push the gas. What you see there is a lot of idiling and normal driving not so much full boost on those plugs.

Overall though looks alright, i see that your running 11 on the primary turbo, not a BIG issue but with stock ECU I'd just keep an eye on the guage