Car Detailing Forums

Fuel regulator.
Its quite common in modification scenario.
Actually what the actual function of the fuel regulator?
Just in doubt, because many of car owners make this item as a compulsory item. Must get? hot items
And to make it clear, can fuel regulator add more hp?
Or just to prevent any problem that will rise later
And or only to make your engine bay look nice (bling.bling)
Please describe?
Sorry for this basic questions, cos im newbie