I bought my G35 with Hsd coilovers on it, does anyone know where I could find a manual for them and possibly somewhere to buy the adjustment tool.
One more thing, should I raise or adjust dampening when I put my winters on?
Thanks

 

Tools should be universal among all coilovers. Worst comes to worst, grab a flat head screwdriver and bang the indentation on the collar with it using a hammer, then just turn the shock. Make sure you're doing the lower collar.