If you search in Evolutionm forum you will find out how this turbo makes more power than a 35R btw wheels are not heavier as a matter of fact they are lighter than cast wheels and also the precision housings flow better than garret housings on both compressor and turbine.. This turbos shine when they run on 40+ psi of boost where the regular cast wheels turbos fall out of breath... Precision its a company that will take the best parts from all turbo companies and create some badass turbos...