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 need to know what glue to use to stick those black color rubber thingy at the door of ur car..
i tried with dunlop glue but it seems to melt in hot sun...
hello guys ..... all pro's ..... dat day i went to brothers and i came across a air breather ...... its like a mini open pod ....... can anyone tell me whats the use and has pic of whare its attached on the engine bay ?