hello there, already install into my 92 1.5s iswara,
after 6 day installing..
the most noticeable on my car now,
1- morning really little shake than before..
2- really easy to start engine.. (before need to twist for a while about 2-3 second) now just like less 1 second twist if more kreeeekkk th starter sound
3- accelaration.. enough push right foot a bit for crusing 80-90, gear5, rpm between 2.0~2.5
4-the best part is, during driving on site(grabble road) i usually play gear 2 and 3 but now, after slow down continue with gear 3 also can without vibrating.. and rpm i used is about the same like before when shifting..
5- fuel usage.. i not observe.. coz sometimes my friend borrow car and topup my fuel.. cant say any at the moment...

*i dont know the cause.. but my radiator fan died on friday maybe it already reach its time.. know la 19 years never change..
*also tested on tuned honda sivic (maybe la,forget the model since dont have name at the back) my friend car, cant feel the difference, maybe already all the management thinggy vtec computer etc.. i also cant describe.. so i made myself conclusion it not reaaly worth to used on modified engine.. maybe lah
*also tested on kancil 1998 660 kancil.. standard also.. can feel the difference.. (lazy to write dah..) lol..

Yup.. this is true.. this also can feel... when use and without use the coil buster..