Rasing the compression by one point gives the engine 4% more power per point of compression that turns out to be 4 hp per hundred there is more to the 2.1 vanagon European engine than a point of compression like a better fuel differant injection system  
so the  2.2L 135HP Euro Cars of Denver is nothing more than lies and 
untested B.S. I cant stand this kind of crap this is nothing more than snake oil 
dont be a sucked in by empty words.
The same kind of crap goes on with the ozzy chip it lost power on the dyno plan and simple 
It would be very easy for me to say my big valve engines make x number of horse power and I dont, There are to many variables to make those kinds of promises when you sell a long block over the counter. And yes I have spent may hours on the dyno tesing my engines.  my integrity is more important to me than offering up some B.S. to make sales. 

Bob Donalds 
boston Engine