I was looking at different threads to see if anyone else is having this problem but when I'm driving about 35-45 mph with my 05 Nismo and when it drops into low RPM's i get this vibration like the motor is lacking power. It goes away when I accelerate or take the OD off. I'm thinking it transmission problems or maybe one of the plugs is not firing correctly. What else could it be? I love the truck but I'm getting tired of having to replace everything that we talk about on the thread. I only have 55,000 so I'm just waiting to have a timing belt issue. :crikey: