2mm will make the different already. More air to go in to the air chamber and combusion room. That's why some bore it until 64 or 67mm... After market TB like Jun is 70mm at inner diameter. But bigger doesn't mean better, big enough for ur engine OK lar. Don't tell me a stock b16a is going to put a 67mm or 70mm TB.
I am in search of the best OEM suspension right now for the CT9A chassis. I am also in search of an oil cooler. Anything else I should be looking at? Sponsors would be even...
Does someone has a spare FD windscreen rubber? I need it urgent. Perhaps anyone knows where can I get it in Msia. Pls also post here some websites for Mazda OEM parts...