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.
Hi, Guys
I understand that for those normal electronic component life spand will stand at around 5 yrs , how is our car ecu ?? is it same ??
Capasitors inside ecu was the first commom part to faulty, is it have any...