Just thought i would share my input on lowering springs. I bought from Btsrt both the SE eibachs and the Diablosport suspension control module. Putting just the springs on the TH is a lot more planted and behaves awesome through hairpin corners. The issue is the ride stiffens a lot due to the stock suspension control module. It fun for a while but after 2-3 hours of long distance driving it is not as fun any more. I installed the DS module, things were ok for under 60mph driving, absorbing the bumps a lot softer, but as you increase in speed the suspension in auto gets to track level firmness. Not fun when cruising.
Now taking advantage of the DS customizable settings, i have made the TH softer than oem auto for highway cruising. It is not hard to do if you understand a few things before changing the settings. The cool thing is the controller will ramp up stiffness if it sees a certain “G” load in any direction, for example you swerve suddenly to avoid something. This “G” load is also customizable, you can increase or decrease the G force necessary for the controller to react. Now for the stiffness settings is another story, but pretty easy to understand. The DS controller has a percentange ramp up according to the speed and mode you are in. So basically the faster you go the higher the percentage of stiffness will be generated. The cool thing is, you can adjust these percentages according to what you want, you can even have them the same percentage through the speed range. At the moment i setup my TH in auto mode for ultra soft ride, my wife has a herniated neck and the eibachs made her a pill popping fanatic. Now she tells me my TH rides smoother than her GC summit. We all know the saying “happy wife, happy life”. I have also setup the sport and track modes differently than stock DS maps. Once winter is over I will hit the track and do few laps to set it up better. But the fact that the controller is also G force sensitive makes tuning the suspension really focused for what you need it to do. For anyone having a DS controller installed don’t hestitate connecting a laptop and reading the help file. It is a little difficult to understand in the beggining, but the system becomes logical once you understand how the settings affects the system. Any questions about using the settings please ask, if I don’t know it means its more for me to learn and try and explain.