Was bored, so I played around with my Apexi throttle controller on the IS-F today.
Generally, I get 10.2L/100km when I drive "normal" during my commute to work.
I decided to put it into the least exciting mode to see what, if any, it would do to fuel mileage. Surprisingly, it returned 8.6L/100km during the same trip. So the electronic trickery works. But man...it feel like I was towing a boat anchor.
For those who care, here are the modes as compared to stock and a photo of the stock looking install.
![](https://www.clublexus.com/forums/attachments/2gen-is250-is350-is-f-classifieds-06-13/261374d1461120986t-apexi-throttle-controller-smart-accel-for-is-f-is250-is350-dscn2336.jpg)
![](http://blog.titanmotorsports.com/wp-content/gallery/apex-smart-accel/dynamic/Apex-SMART-Accel-contoller-throttle.jpg-nggid044919-ngg0dyn-0x0x100-00f0w010c010r110f110r010t010.jpg)