Intercooler charge pipe size
so you'll be steping down to a 2.5" then later back up to the 4" opening at the TB, not the best, but 2.5 will get you by.
if you want to gain every bit you can then run 3" to the IC then have the IC opening be 4" to the TB
I agree with smokin, I would use 3" to the IC, and then 4" from the IC to the TB, that is what I plan to do, and I have the same kit that you do. Phamspeed, with T-76GTSH.


