Wira 1.3 EFI VDO user also.

I recommend you stick back to the standard NGK spark plugs & save your money.
Sorry to splash cold water on you,SinS

Last time I tried Bosch Super 4 on my old Sunny even, thinking it will bring extra power, actually it doesn't and FC still remains the same. But my Sunny was "happier" on NGK Platinums.
This is because if you Google for Bosch Super 4, mostly says "no difference".

If you still insist wanting better plugs then you can try NGK G-Power Platinums. I tried it and it was fine with me though

If you want better power actually , change your spark plug cable to new ones, even change to ori spark plug cable can also. 2002=10 years old car, you should consider changing cables although it's not spoilt yet.
I changed my old spark plug cables to new ones, and it brings back the 1.3 powah (and smile).
And don't forget to reset the ECU for it to relearn the ignition timing curve.

get iridium spark plug

dont bother with plug n plug cables... especially if ur engine is stock...stick to stock... and change plugs every 10k km and ull be fine.