turbo pumps have a 'spaceship' on top. if yours has that then you're set. the k14 turbo spools very nicely at low rpm's, but suffers at higher rpm's. (it's a good compromise for low end torque and decent mid ranged power though, which is ideally what you want)the larger k24's & T3's are laggy down low, but scream all the way to the redline :twisted: (however more so the T3)mild tuning will give you a few ponies for sure. so it all depends on your driving needs whether or not you need to change turbo size.