Can you fit an apr intake Hose on a t3/t4 turbo or is the hose to small. Also do they sell an adaptor so you can put the hose on?

 

to anwser your questions, no and yes..

but you're not going want to put it on anyways. the inlet diameter is going to choke the turbo. best bet is to use the same diameter (or larger)intake as what the diameter of your turbo's inlet is.