Ok, so heres my story. I just replaced my knock sensor and spark plugs on my 04 fronty v6 s/c. After getting everything back together i drove it around for that day and it ran like a champ. the next day i took it to work and felt a sputter around 2.5k rpm. before i used a scan tool i already knew what it was but no clue as to why. All the plugs are gapped properly and everything was re-assembled by the book after the knock sensor fun. all the wires are hooked up correctly and from what i can see there are no issues. in park @ the house i can rev though all rpm without a sputter at all but when i put a load on it (driving down the road) it bogs down when i give it to much gas and around 2.5k rpm's when accelerating. Im not sure what the cause is and im hoping that someone has a fresh idea me. if you know anything that can help, please let me know.