GB: Rotary-Works 90mm CNC Cut Billet Aluminum Throttle Body

[RICE RACING]

They look real nice

I made a similar thing out of the stock unit and in reality on the street in my own experience they work crap

Problem is most of the air speed is lost down the secondary runners in the lower inlet manifold, and cause you are running primary injectors at low speed low throttle the fuel mixing is rubbish everything suffers and its a basic mismatched concept that can never have the bugs tuned out as its a mechanical air flow and speed problem.

Once you are up and driving they are great I went back to a standard offset slightly staged primary to secondary butterfly system and all problems went away. A single large throttle or locked std triple butterfly especially one that interlinks primary and secondary lower runners will never be right......... not a warning against the group buy but worth knowing if your not aware of the issues of this type of thing and expect your car to be perfect in the way it runs.