That's what I read everywhere, literally. From e30tech, to R3V. My issue is that the motor almost has 300k and pushing 10psi to 1 bar of boost would be detrimental to the longevity of the engine. I just did my timing belt, water pump, plugs, etc. a few weeks ago and going to do a valve adjustment when I get a day off but would it even by worth it at that stage in the engines life?