haha..
ask ur fren to sell them to u murah murah la.. hehe..
anyway, for VR4 Cyclone engine, use normal copper or platinum is enough, coz easy to replace..
if V6 engine, maybe good to use as iridium lasts longer, so no need to always replace it, kan engine V6 leceh to replace the sparkplug..
RSM is a Rev Speed Meter.
different use compared to SAFC.
SAFC is like a piggyback which u can set ur AF ratio.
RSM is just a digital display for speedometer, rpm meter, battery voltage and also can remove speedcut..
dont change la, i mean, put use both meters la.
SAFC to correct and optimize ur Air-Fuel ratio, RSM to display those meters for u...
if im using RSM only can?....My SAFC already like gila laaa...sometime the rpm can read sometime could read....that why im not using it...and the timing always lari2 laaa sometime......many time go setting but after that some prob come.....

i'm planing to change a little big then VR4...i servey at mudah.com its so many..i think better buy new 1 then a 2nd....
