Hi all

I am supercharging my e36 323i at the moment and looking to adding a intercooler...
All the pipe work is 3'' at the moment and no longer then 1 meter long.

I wont to up the boost to around 11-12psi so im adding an intercooler. But the one i have has 2.5'' inlet and outlet.
How much would this effect everything if i come out of the sc with 3'', then step down to 2.5 going into and out the intercooler. Then back up to 3'' straight into tge inlet manifold. All the pipework will be just over a meter long.

And info would be great.

Cheers