Just pondering induction pipes (on the boost side) pros and cons.
I believe the standard 20VT turbo compressor exit is 2.5”. The way my FMIC is setup, it then goes straight up to a 3” converter, and then to another pipe and onto the intercooler.

Is there any advantage to this, or is it best to have induction piping that is the same bore all the way through? thanks

I would say it is probably best to have the same all the way through, as the air still has to be forced through the throttle body which has a smaller diameter than the intercooler pipe work

The standard turbo compressor exit size is 51mm. You can buy SAMCO 60 to 51mm reducing elbows easily for about £20.

Chris

Cheers for your help

The pipe work on the 20vt gets smaller all the way through, it starts off at 76mm at the air filter and reduces down to about 50mm at the throttle.
Maybe fiat did this for a reason, as the pipe reduces in size the velocity of air will increse as in the venturi effect ?