Quentin

Spark plugs are ngk bur9eqp. Which are resistor plug, leads are just normal 8.0 leads

Not sure about the plugs, leads are just normal leads i guess.

Just runs factory fd rx7 coils and ignitor, ignitor is well earth, but will earth to motor as well.

Hello again, Car was running well back in 2012 (did everything it should), pulled it all apart changed the turbo setup, changed the wiring and location of the coils and igniter, 6 years later sent it off to be tuned and it had a misfire of some sort, when it does it the tacho needle drops from 5000 down to 2000 ish. Doesn't seem to matter about load more rpm. The coils sit on the rail beside the spark plugs. I hav shorted leads, the wiring runs straight down from the cas and along the bottem of the motor, which is near the sparkplugs leads and coil. And the igniter it right at the front of the car. Im guessing the trigger / interference igniter coil cas problem somewhere and was wonder if you had any ideas rather than me going in blind. Thanks Quentin

Ok thanks. That makes it easy. I have these but i cant find much information on them. Cheers