do it...i had a chance last week to test it out but was in a hurry so I missed out. so for the 2013-2014 an extra $200 for the ecu. im still looking for the LSD.

 

I've done both upgrades ('12 IS-F Steering ECU & OS Giken LSD) on my IS350. Here are my posts with the changes I've noticed for both performance mods:

- '12 IS-F Steering ECU:
https://www.clublexus.com/forums/8351443-post189.html

- OS Giken Super Lock LSD (TCD):
https://www.clublexus.com/forums/per...l-tcd-lsd.html

 

thanks for the input on the 2011-2012 steering ecu. i think this has been discuss on the isf section already. what we still need is more information on what is the difference between '11-'12 and '13-'14 ecu or if there is any at all to justify the $200 increase from the '11-'12 model. lucky you have the lsd...i am looking at that next as well.