Turbo exhaust

[turbomirage]

I am using 2.5" custom mandrel bent aluminum exhaust. The downpipe is mild steel. Made 450 whp @21 psi and am running 24 psi and low elevens(look at signature). The whole exhaust weighs 7 lbs. It is on a d series. What size is your turbo outlet? Making everything work together is key to making good power. Here is a pic before we added the muffler(which is a custom fabbed aluminum piece also):

What size turbo are you running?