Ooohhh this one has been a tricky one! Time to get input on this ‘07 CX-7! The situation in short: 125,000 miles, all stock, slight misfire in cylinder 2 at start-up or at idle (and very mild most of the time). Runs perfectly fine otherwise... but the longer a drive, the rougher the first minute the next morning. Already done/tried: Cleaned the MAF Thought it’d be my coil since my plugs are only 4,000 miles, so I put in a new coil. Didn’t work. Swapped plugs with cylinder 3 (and realized they are Denso and gapped at 0.038). The issue didn’t follow to 3. Put in a new NGK plug (the 3787), gapped at 0.028 (they came out that way instead of 0.32. Figured that’d be perfect) Already replaced all injector seals 4,000 miles ago when I had compression issues in cylinder 3. Almost through a first tank with a bottle of Techron in the tank Freeze frame data (if of any use): Fuel sys 1: CL Fuel Sys 2: NA Call load: 53.3% ECT des F: 120.2 STFT B1 (%): -6.3 LTFT B1 (%): 18.0 MAP (inHg): 18.3 Eng rpm: 851 Veh speed (rpm): 851 Veh speed (mph): 4 Spark adv: -2.0 IAT deg F: 93.2 MAF (lb/min): 1.0 TPS (%): 15.7 Run time (sec): 58 Fuel press (psi): 1008.0 Command EGR (%): 0.0 Command EVAP (%): 0.0 Fuel level:12.5% Warm up DTC clear: 1 Clear distance (miles): 2 BARO (InHg): 29.5 CAT Te 11 (deg F): 629.8 ÉCU volts: 13.684 Load value (%): 43.9 EQ ratio: 0.991 Real TPS %: 6.3 Ambient temp deg F: 93.2 TPS B (%): 15.7 Acc pedal D %: 31.8 Acc pedal E %: 20.4 Command TAC %: 7.5 Thoughts? What do you suspect, and what would you recommend trying next (injector? Valve cover gasket? Other?) Thanks in advance for your input!