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BTW the plugs I'm running are the NGK ZFR5F-11 which are the factory specified units for the JDM engine. These are the same ones specified by TheMAN is his article here: http://www.msprotege.com/forum/showthread.php?t=123631485

Yep, definately in the correct order - it's pretty hard to get wrong on this motor and the wires are only long enough to reach the correct cylinder and the coils sit on top of the other cylinders. This is the FS-ZE JDM engine which has 2 coils each controlling 2 cylinders - not sure if that's...

Anyone here run into this problem? I changed the spark plugs on my partners car JDM Mazda Familia SP20 (FS-ZE) using the exact same NGK spark plugs as what was in there and suddenly I get misfires like crazy. After the car has been warmed up and left for 5 - 10 mins then started again it is...