back when i first got my car, i hit 131 mph in my 95 GLE. The rpms were around 4-4200K(i'm not sure of the exact rpm's it was a while back)and i did this with just a K and N filter. The car would not go any faster. I'm sure if i tried, i can go faster with the mods i have now, but i ain't a dumb muthaf_cker any more. Or maybe i still am...