I've heard between the duel bb and the new efficient design, that they spool up quicker then past turbos, yet make more power.

right now i have a Garrett 60-1 .70 ar t04s w/t3 .82 a/r. its starts seeing boost about 2500 and full around 5 k. i think its limits will be around 5xx whp.

my new goal is 600+. thing is i don't wan ANY more lag then i have. i can deal with this amount, but no more. if anything i was hoping the duel bb and new design might help me spool a little quicker.

anyone with experience, your knowledge will be greatly app.