Trust me the same thing happens with a turbo'd car. I love the Nissan but 7lbs of boost is starting to feel a bit weak. Since discovering the high/low boost button on the controller I have found myself using it alot more. 7lbs is fun but 14lbs is alot more fun! You find yourself looking at mods or ways of tinkering with the car to somehow make it faster or quicker to spool up. That may just be why my dad used to always have a project car in the garage. Working on them is fun and so is improving them. Once you get them to where you've about taken it as far as street legal use will let you, you start looking at a new car. By the way the 14lbs is about all the Primera will take without some really expensive work.