Hey yall, so my 92 has a misfire at lower rpms. When I get on the gas it either runs smooth or struggles(misfires) then comes out running smoothish. I dont have any know vacuum leaks, I just deleted my egr, and rebuilt the TB. I have new plugs, wires, and a coil pack. My question is, could it be the PTU(Power Transistor Unit)? Thats the only thing along the ignition I havent replaced. Fuel is also good, before I changed plugs it was running super rich, like spittin soot out on the ground rich haha. Any tips or advice would be extremely appreciated.