I am pulling out my gt4208 as the atmosphere charger on my street truck and am replacing it with a gt4718. I currently have a 4 inch system and am wondering if it will flow enough for the new turbo.
I have read that a 4 inch is good to 1000 hp in the gasser world, don't know if its the same on diesel. also the turbine exducer is approximately 3.3 inches.
I am planning on running a 5 inch down pipe and reducing to my 4 inch system. Will this system be a restriction or will i notice no difference, other than noise, between a 4 inch and 5 inch?
I have read that a 4 inch is good to 1000 hp in the gasser world, don't know if its the same on diesel. also the turbine exducer is approximately 3.3 inches.
I am planning on running a 5 inch down pipe and reducing to my 4 inch system. Will this system be a restriction or will i notice no difference, other than noise, between a 4 inch and 5 inch?