| Like many others, my idle after the Z1 TB install was up around 1600-1800rpms. This is a how I adjusted it back down to normal.. (700-800rpm) 1. Make sure theres a little slack in the actual throttle cable (14mm x2 Nuts) 2. This is what my Driver side TB looked like before any adjustment (notice the gap) 
3. The driver side linkage is adjustable meaning that the set screw can be forced up or down to adjust the linkage and get rid of the gap. Adjusting this also makes the throttle bodies open/close at the same time when correct. (8mm x1 and a small screwdriver) First loosen the nut, then the screw can be turned to adjust. 
Mine needed to be loosened to close the gap and put the throttle stop to rest on the TB stop. 
4. Take a step back and make sure both the driver and pass. side TB's are opening at the same time. (A 2nd person is helpful here) Also check that the Black threaded adjustment stops are set equally on pass. side to driver side (The TB's Metal Arm's) 
5. Setting the TPS As you can see, this is the final adjustment position on my Z (.044) & the TPS is turned almost fully clockwise. 
6. Using ConZult I could manipulate the TPS to make it hit .044 Dead on. (7mm x2 bolts and twist) It should be set .044-.046 when the linkage is at rest. 
7. Make sure the PCV metal hoses are not interfering with the Throttle linkage causing it to bind 8. Start up the car and check the idle and throttle full sweep. 
9. Now you can also adjust the Idle air screw to get the idle to sit just right.
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Throttle Linkage and Position Adjustment After Z1 TB Install - 
