Lots of people have had troubles with the BBK, supposedly those issues have been taken care of. JTS Vemom looks like a new player on the block, may be worth trying. I have the Roe Racing single blade, and love it.
I did back-to-back dyno runs using x-metal throttle body on my heads/cam setup. Check out my thread, Post #2 has the throttle body power gain findings.
I went with a Fastman TB after reading a few mixed reviews about idling with some of the others. It's a slightly larger twin blade that favors the OEM unit.
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