Well, I know a lot of FD owners running 300+ HP prefers to use all 9s instead of 9s and 7s.
That being said, Trailing 9s from 8 will not work on FDs. So, that only leaves with 7s for the leading.
Now I think its not much to do with FD 7s but could be something majorly wrong with my 8. Last night, I did all the resets and crank the car up and let it idle for 10 mins. This morning, I got it started and the car idled quite badly. RPM will hike up to 2k and then drop backed to 750 and idled like ass. I'm going to swap both leading and trailing with my older plugs this afternoon and see if its any better... I8U stated that it could be the PCM... I'm taking the car into the dealership in the morning and see what they could tell me.. I'm quite fed up the the 8!!! I know a lot of you think its a great car, but I'm starting to think differ.. I've literally tried everything I could do but now I'm hitting the wall on this damn car!! And its worth less than my FD
The headache isn't worth it!! We'll see what the dealership says... If its going to cost me more than a grand, I'm NEVER buying another fucking Mazda Rotary for daily!