I just bought my car about a month ago, the previous owner's mechanic put in the wrong spark plugs for a forced induction car so I put in some NGK 4291s gapped to .032. The plugs I pulled out have less then 2500 miles on them. I drove the car down from Indianapolis to Miami and went from Miami to Tampa and back once. I noticed a hesitation at higher RPMs thinking it might have been the spark plugs. I attached some pictures of the plugs, do these look like I am running lean? Since I am bought someone elses modded car, I want to make sure everything is running right. I also noticed that I could not hear the intercooler pump turning on and the intercooler radiator is cool to the touch right after driving for 30 min so I need to diagnose if it's the relay or the pump itself. Anyone heard of these failing before?