Is this true or not? Can someone exlpain to me how this works? I always thought that having high compression turbo set up doesn't lag as much as lower compression. So fill me in with some knowledge!

 

It's somewhat true. How fast a turbo spools has to do with two things (as far as I know). The first is the amount of air that is going through the engine. THe more air per second, the faster the turbo will spin. The second is heat. The hotter it is, the more it'll spin the turbo.

Whether or not a higher compression engine pushes more air through at a given RPM than a lower compression one, that's up to a lot of other factors I think.

 

Higher compression pistons do create a stronger vacuum, and create a more complete burn (resulting in an increase in exhaust gases).

It will help you spool faster.