where has this thread gone to from where? You guys want to run your cars with out air filters? fine, but be ready for any consequential damaged caused and huge $$$ bills. Racing is a totally different ball game, they just want to win, they race in controlled environments, they even cut out car's aprons and do things to car that normally we would be shocked to know. Its definitely not for us road users. @ENKI, understand something, its not just air filter that can improve performance to reach those speeds, one has to make sure the car gets more diesel in the cylinders along with increased air volume to achieve what you are looking for. You need a remap for this, not just airfilter removal. If easing the air filter's restriction is your goal, buy a performance airfilter, its better than no filter at all and remap your car, it will go 190+kmph. But be warned you are risking fellow road user lives and undertaking risks doing all and/or any of these.