Tein 350Z H-Techs with Tokico D-Specs or Koni's? Which is better for overall street performance for coupe? Thanks.

 

D-specs because of being double adjustable. Koni's are single adjustable. And thats even with the knowledge that their are less then a handfull of Z guy's that have D-specs that autocross or do tracking. And I have Koni's too.

 

what do u mean double adjustable?

 

Double adjustable meaning when you turn the adjustment key to stiffer your adjusting compression rebound AND compression dampning at the same time. Koni's on the other hand when you turn them up or down you are doing a single adjustment, rebound only. Compression dampning is how quickly the shock allow's upward movement. Rebound is the opposite, it's how quickly the shock allow's the suspension to return AFTER it's been compressed.

 

Generally rebound is the one that needs adjusting as the shock seals wear.

However adjusting compression allows you to perfectly match the shocks to the spring stiffness and wheel tire weight.

 

http://www.koni-na.com/faq.cfm#4

Higher rebound rates is a tool for using higher spring rates or to work other issues surrounding chassis control. Tc Kline for a price does offer shocks with seperate compression dampning and seperate rebound control.

"A: One of the great advantages of KONI adjustable shocks is that there is no specific spring for matching optimum performance. Instead you can adjust your KONIs to match your springs. Most performance springs have a higher spring rate than the vehicle's original springs. Since the shock controls the motion of the spring, increased spring rates require more rebound damping for control and that is one of the reasons why KONIs are rebound adjustable "

This of course changes nothing on my reasoning for saying to go with D-specs.