everyone has there own opinion on this,ive tried the duncan pyramid valve,vforce2, and boyesens on stock valve.right now i have a rad valve in it. the duncan pyramid seemed to have the best low to mid,the vforce2 was an improvement on top end,boyesens on stock cage are a little better than stock petals,i think i like the rad valve best all around.these power gains are noticable but not any big hp gains to be had. i think the vforce3 is adjustable/??. every application is different depending on how your R is tuned. i run a lrd adjustable pipe,mid range porting 220 psi compression,38mm roundslide carby. |