It comes with a tiny red box and code to connect the factory ECU. A normal/action switch is option.

Because ECU cover can't be mounted if you intall it as A-RF suggest, I relocated it below the steering wheel. the switch was relocated above the fuse box. There are 4 buttons space.My Type E came with one functional boton(panel light adjust)only,then there came, a rear foglight/DSC button. Now the TREC button was added.

There are 6 jummper on the box. jumpper 1-3 was used for selection of TREC control rate( small, mid,large), jumper 4-5 was the selection of control range (4: 70%, 5, 90%). junmmper 6 confused me a little. As A-RF instruciton, I should set it disable but I found it would disturb the DSC. I set it in"enable" then all abnormal light singal was gone.

A "ST screw" was used to adjust the sensitivity. You should turn off the engine
(but remain power on) to set it. The instruction said you should let the green light off during the throttle is closed and linght on at the throttle level you wish. The green light should turn off during full throttle.

My initial setting was set on 2,4. The throttle resposne was really improved on low rpm range as A-RF declare.

The total work hour is about 3hrs under my friend's help. I will try to put come photos on latter.

 

soooo what is the point to this thing?

 

what does this do?

 

Just a guess, but it sounds like a throttle sensitivity controller that probably gives a placebo effect that your throttle response is quicker