Okay sports fans I want to share with you the D-spec throttle controller. I have been modifying cars for over 25 Years and have to say this device has easily deivered the most bang for my buck!!! I am familiar with both the Blitz and the TOM's but had not heard of the D-spec unit. My good friend and service advisor who owns a GS460 reasearched, bought and installed one on his car. After a couple of weeks to allow the learning ECU some time to aquaint itself with the new rate of which the throttle opens I went for a spin. WOW! absolutely tranformed his car into a sporting driving experience. I just installed one on my F and am amazed at the results. D-spec controller: ECON mode NORMAL mode and SPORT mode. Cost is $130.00 Yes you are reading this correctly $130.00. Check it out you will not be disapponinted!!!