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....
i do really need advice...im using auto gsr now and wan to convert manual gb...wat is the BEST! g.box for my gsr?gsr gbox ok?or evo ok?how about evo3 gb?some say evo3 gb not really perfect for gsr except for evo 1 n 2...so what is the pro and cons using evo gbox..and same also gsr gbox?help guys..
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