TII secondary THB mod (pros and cons).

[FRED]

The jpg attached are of a JDM throttle body, but is a series five.

First jpg shows the flat black cam, damper, rod and spring that control the number two secondary plates.

Second jpg of the JDM throttle body show the number two secondary plates shut which is normal til the pedal is stepped on fully and then they are supposed to ( on a stk car) open after the number one secondary plates and primary plates open.

And yes, no double throttle diaphram is shown for the JDM.

Thats what a stk JDM throttle body should look like for a turboII.