They looked great. Black around the outside and white on the tips. I was using the NGK plugs, one step cooler then stock. They were a new set installed for the Dyno runs. I swapped the old plugs back, and the problem was still the same. Then I rolled back to the pre-Dyno EMS setting and the issue is gone, but the A/F is leaner. But from what I read in numerus threads, it seams some what common for some cars, but not for all cars. This tells me it is a combination of tuning and plugs. I should have NGK 7173 installed by the end of the day, assuming I can find them locally.