While doing a little research I stumbled across these dyno graphs for the Zeal Function X coilovers for FD3S, factory valved for 11kg front, 8kg rear spring rates. Also I found a good read on how to understand these graphs, and thought I would share.

I'm not sure how this would translate to the Z but I have requested a set of dyno graphs for their off the self true coil setup to see what I am dealing with before sending mine in and spending the money to have them rebuilt.

I figured this might be a good start for discussion as to the quality of the Function Xs.

From what I have found they seem to be quality graphs but I'm definitely a noob when it comes to these things. Hopefully some good discussion will come of this.

Enjoy.


Guide to Dyno Graphs


Force vs Absolute Velocity (rebound open) plots, no offset, Full Stiff (30)


Force vs Absolute Velocity (rebound open) plots, no offset, Middle (15)


Force vs Absolute velocity (rebound open), offset to zero, Full Soft (1)


Force vs Absolute velocity (rebound open), offset to zero, Full Stiff (30)


Force vs Absolute velocity (rebound open), offset to zero, Medium (15)


Force vs Absolute velocity (rebound open), offset to zero, Full Soft (1)


Force vs Displacement, Full Stiff (30)


Force vs Displacement, Medium (15)


Force vs Displacement, Full Stiff (1)


Force vs Displacement, Full Stiff (30)

 

Well this would explain my massive over-steer issues.



They are telling me the separate spring shock and true coil over Function X coil overs both have the same spring rates. I'll be sending these off to have new spring rates in the rear added and have them re valved.

Any recommended rates for a true coil over setup?