Yes a diverter may be better than a BOV, But no a BOV is not just a sound. Thats quite possibly the most ignorant thing i've ever heard, and sounds like it came straight from the marketing team of whoever you bought your recirc setup from.
No, a BOV is not the end all be all to turbos, it has its trade offs like everything else. But, I NEVER had a problem with mine causing rich conditions, and i was at 14psi. Not sure how your mafs work, but my dodge had a map, (manifold air pressure), perhaps thats the reason. Research shows that a lot of cars do have rich problems(still no dodges that i found), but nobody on my dodge forums has ever mentioned a problem with them. I (read used to) know tons of people running 12sec cars that all ran BOVs, these are people that dyno their cars after even the simplest of changes, if a BOV didn't increase performance, it wouldn't have been on the car, but nobody removed them. Instead they found ways to make them better. I personally noticed a huge difference in the boost that I had after a shift, but thats seat of my pants and watching the boost gauge's needle, not hardcore numbers.
3am...too much thinking
" when you lose all that air you'll get too rich on intitial run and overun. you're actually losing power here. over time you may notice bucking and hesitation on takeoff. not to mention the overly rich mixture fouling your plugs even in some cases ruining your catalytic converter. blowoff valves.. blitz is the worse.. aren't reliable.. the diaphram will leak pressure back into the intake and you'll never know... get a good diverter system installed dyno/track before and after and you'll see for yourself.
