Your VR4 heavily modded?
Have not use NGK7 before but have tried Denso Iridium IK22 which is about NGK7 heat range. To me not much difference since my VR4 is standard stock engine. Currently using back NGK6 heat range only....
hello guys..just got my evo7 GT-A last week..just want some guide from the sifus about a few standard mods that we need to do as a beginner..not too ganas one lar..just a typical mods..my turbo knowledge is poor coz...
Anyone know how to DIY a spring stiffener? It is used in between the spring to make it more stiff... to improve braking and handling. I know splitfire is selling but too ex.... around S$80/pair.