Intercooler pipe sizing

[MAXPSICIVIC]

Can any one help me out with what size I should do my intercooler piping I LS w/ stock throtle body, A garret t3 with a .60 compresor and the inlet and outlet on my intercooler are just over 2 1/4?? Any advise would be greatly appreciated! thanks

[therumbligteg]

2 from turbo to intercooler, and 2.25 from the intercooler to the tb

[MAXPSICIVIC]

thanks bro why the tw0 different sizes if i can ask does it keep teh boost more constant ?? thanks again for the quick reply

[therumbligteg]

2.25 can handle all the hp you can throw at the engine. 2 from the turbo to the intercooler helps with a lag, their is less volume to fill untill it hits the intercooler, but if you want you can go 2.25 from the turbo to the intercooler. I have done pleanty of setup that way and gotton good hp out of them. Just do not go over 2.25. good luck.