1.  CAn I install X-Power with Hot Wire?

   Yes, you can. You can expect synergic effects.

2.  Is it the same as other similar product from other maker?

   Most similar product gave 2 time ignition which is original 1 time ignition,therefore the designing concept are differ from X-Power.

3.  If the car carried out ROM tuning up,doesn't it become a cause out of condition?

   Although it seem that possibility is very low,if something like engine knocking happened,please set up air/fuel ratio and tinition timing again.

4.  If X-power become our of order, is there any possiblilities if engine break down and stop?

  Even if X-Power break down, it will not give any influence to engine, you can drive as usual.