Should help out. I'd like to do it, but my cold pipe runs about where I'd need to run a large enough intake pipe. In theory, the cooler you can get the air pre-turbo, the less energy the compressor needs to compress it. I know underhood temps can probably vary 20 degrees vs. ambient, so there's that. FWIW, I've logged about 270*F post-turbo at 18psi on a 75* night, and about 90-95* post-charge cooler on a long highway pull.
On the other hand, there's the thought of restricting the compressor intake flow. The closer you have a filter element, the more able the compressor is to take air from wherever at any rate. If you have a long intake tube, you need to make sure it's adequately sized that you don't get pressure drops when under boost, or for quick-spooling turbos before the air can get a stable flow. Most engine bays can't take that size of tubing for descent power. If you're sub-250hp, then yeah, 3" would be okay, but I've got a restriction gauge off a GM on my turbo intake, and at 3" with a 10" tube at 15psi it's pulling a vacuum of about 3"Hg. Higher hp may need 'feeder' tubes 4"+ to get good volume flow, also kinda depends on DD vs. drag, etc.

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'95 GS w/ t3/t4b
FMIC, diy piping & RFL BOV
MS2-Extra Fuel&Spark
50 lb/hr Holley injectors w/ 1:1 RRFPR
JE 8.8:1 dish w/ Hastings Rings
Eagle Rods w/ ARP bolts
ARP Head studs
Mild port/polish head
3" custom DP/cat section, 3" PIT catback
dual MBC - 12 psi / 20psi