I like them definitly helped throttle response, seemed to have a little more top end pull not sure if they may be due to the cage design flowing more air. I went from stock to the SRP so I cant really comment on V force I have never used them. I also ditched the great boost bottle when I put them in I installed the wicked motorsports intake manifold with internal crossover. But all in all I like them and very curios to see how they do on dyno. Not to Hijack the thread I dont have acces to a dyno but what do you guys think my bike might be putting down. 1999 .30 over, stock ports. cool head 18cc domes, +4 timing key,SRP ram air cage, 28mm keihin pwks, K&N air filter stock box no lid,rocket pipes. Do you think 55-60 at rear wheel would be ball park or too much.