Maganda pa rin magpa-install sa blue lazer kasi they know their product very well. Normal lang talaga na matagal silang mag-install, sakin din, 9am ako nandon, 3pm natapos kasi they have to removed the old module pa. Syempre, mabusisi din mga wirings kasi hindi dapat magkapalit-palit. I have my 420 installed october last year. Ina-vail ko din lahat ng feature. My channel 1 is autostart, 2 is roll down window. Right now, thumbs-up pa din ako sa blue lazer and sa autopage.