intercooler pipe diameter

[Magnum]

2 inch hot pipe and 2.5 inch cold pipe.

[CNHSS1]

Hi Magnum
2" from the turbo housing to IC and 2.5" from the IC to TB?
why the different diameters?

[Wocketfast]

Im curious too as I would have thought it would be the other way round.

i.e. cooler air is denser therefore you get a pressure drop across and intercooler anyway, increasing the pipe diameter would only make that worse surely?

[Magnum]

Originally Posted by CNHSS1

Hi Magnum
2" from the turbo housing to IC and 2.5" from the IC to TB?
why the different diameters?

2" from the compressor to the IC to keep velocity. Then 2.5" to closesly match your TB size on the cold side.