i was wondering if i can stay with 1 1/2 inch charge piping because thats all the bigger the turbo outlet is.?? i notice in the newbie turbo post it says 2-2.5 but would that just mean the turbo would need to push more air in order to fill up that volume and reach the pressure? what should i do 1.5 inch? or 2inch+ thanks

 

definitly go bigger than 1.5"

think of it kind of like exhuast...its just makes less restriction on the air flowing through it. remember, its not necessarily PSI you want. its CFMs

 

that makes sense..i'm gonna try to keep it the same size as the throttle body, and i can just reduce it when i get to the turbo. thanks for the help

 

yeah 1.5 will be a restriction... i run 2.5, but seems like most people get away with 2 just fine

 

my TB takes 2.5" just fine. and i would rather it get bigger coming out of the turbo instead of getting bigger going into the TB. plus most intercoolers take either a 2" or 2.5" pipe.

 

im running 2.25 thats crush bent and it seems to be working fine. Im sure a 2" mandrel system would be ok! But im seeing boost by 3k and full boost by 4K but im using the small t25