Just tell the shop you want 70% for front windscreen, 50% for side and back windows.. Ngam ngam pass

yup, 5 windows is for side windows + back window.
i saw he stated there you can opt for 50%, 35%, 25%, or 5%. so you just choose one of these.
50% means 50% VLT, 35% means 35% VLT (which is darker), 25% means 25% VLT (which is even darker), and 5% means 5% VLT (which is the darkest among the 4).

for your burning question: a lot of cars in msia are doing the same way too. Just that I'm not sure whether JPJ will kacau you or not. Just do the same tone for all your windows which is 50% VLT. Other than 50%, all the percentage mentioned above are illegal since it's darker than allowed % of VLT

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Added on December 28, 2011, 10:37 amso you wanna tear it off? well, if you are tearing then you gonna tear both layers of film.. it's kinda impossible to tear just one layer without damaging the other layer. If you are okay with side windows, just tear the windscreen tint and go any tint shop to re-tint the windscreen. If you are not okay with side windows, I think you might just have to tear everything off and redo your tint as I felt your current % of VLT does not pass JPJ too. I guess the shop didn't tipu you, it's becoz any 2 layers of "not dark" tint being together, they would be "very dark" tint. Go for high % of VLT film for second layer.

This post has been edited by shiyau: Dec 28 2011, 10:37 AM

nope.. you have to see whether it gives high rejection of infrared (IR) or not~ VLT doesn't affect the price usually.
The higher the % rejection of IR, the higher the price. VLT 50%, but if IR is low (I have checked your link, they didn't state whether how high % is the IR rejection), you will still feel hot with that film.. IR above 70% or 80% would be good as it rejects large amount of heat, but however, if will cause disturbance to GPS and Smart Tag users.

This post has been edited by shiyau: Dec 28 2011, 02:21 PM

maybe it affects, maybe it won't. This is very subjective until you try it out. lol. I was a RF engineer trainee (a job of telecommunication field), I've learned that the signal strength of a device varies when you put the device on the dashboard facing upward and facing downward. Just put your garmin near to the windscreen will do~