Ok, I thought I would get your guys opinion... this problem is driving me bonkers. It all started a couple months ago.
I installed the HKS EVC5. Everything went in fine...no problems. I’m not even sure it’s related, but I thought it worth mentioning. Then, like a month later I noticed that when going about 3/4 throttle holding and then going full throttle the car would really shake.
At the time I was running the Denso plugs and wires. I recently changed over to Crane wires and Champion double platinum’s. The shaking appeared to have gone away. However, now my idling is very rough...I changed back to some old champions that I had and the idling went away (shaking once again happening). So I changed the plugs back and the rough idling was back again. I then changed the plugs out one by one and found that the bad idling was minimum, if I didn’t have all 4 of the double platinum in.
So, right now, I’m running with 3 double plats. and 1 champ. It idles decent and the shaking still happens, but only if I just gun it…sometimes. If I accelerate like normal it seems to be fine.