Design differences between a Holset "HIC" vs "HX35"

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I just completed installing a 12cm2 wastegated exhaust housing on my '92 First Generation W-250 and notice my compressor side of the turbo stated it was a model "HIC".

Is the design differences between the "HIC" and the "HX35"?

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1992 W250 5spd. 3. 54 gears, LSD, JRE enhanced VE Injector Pump, BD High Output Injectors, Banks "Stinger Plus" consisting of a replaced 12cm2 wastegated housing, 3 1/2" JRE modified exhaust/muffler, pyro/boost gages, K&N, Skyjacker 2 1/2" front suspension lift to clear 305/70R/16 Goodyear MT's, Mag-Hytec, Amsoil, Rhino liner, Fully Chrominated Aluminum Aftermarket Accessory T-handle Shift Knob

 

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Boy you start a thread and keep everyone in suspence.
Give us your impressions.
Sorry Don't know the difference but can find out.

Ted Jannetty

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Ted Jannetty, Owner President Jannetty Racing Enterprises Inc.
97 3500 4x4 club cab 5spd. RED, JRE stage 3 power kit, JRE 4" exhaust
JRE 1/2 inch fuel system, Cummins 370 hp injectors, Prime loc,
Cummins chrome kit, US Gear 20% over drive, 3. 54 posi, Autometer
gauges, boost, and Pyrometer, BD exhaust brake.
97 Ski-Doo 670 turbocharged
99 Honda Forman 450 ES

 

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The H1C supplied by Holset for the 1st Gen engines nonwastegated, no "silencer" ring provision.
HX35 supplied for the wastegated applications, with later silencer ring. (aggressive spool-up via smaller hot end housing)
It's a start... .....

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'98 Cummins 12v, 2500, 4WD, 5SPD, 3. 55, Cummins 300 injectors, JRE III kit, 4" turbo to tip exhaust, boost/pyro, 2 1/2" HD coils and rear spring kit, HD upper/lower control arms, Big Medicine. Got Diesel.

 

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I gave my oem 12cm2 wastegated exhaust housing to a client of ours to try. He has a "93 which I believe had a 18 housing on it. The feedback is all thumbs up. He hasn't had it on any trips yet but around town the response is much better. I guess the drivability improvment is a no-brainer, but my thought is regarding the size. It seems to me that purchasing a 16cm2 housing is not going to be rewarding, to small a change. This has been confirmed by a few people who have done just this. Knowing the trucks have had 12cm2 housings since "94 speaks to me. I bet Ted will concur.

Now I need to find that pump adjustment to give the "93 a tad more fuel #ad

 

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Guys,
I have posted this question on the right number of valves forum, but since I found this thread I am going to ask it again. Has anyone thought about splitting the exhaust and using two HX-35/19cm turbos for boost? I'm thinking two intercoolers with a stagger mount to allow hose connection, a Banks twin ram, split to allow two inlet connections. With dual 3" exhausts to help control EGT's. Any imput would be apprediated as I don't fully understand the dynamics of turbocharging, as in ratios of volume of air as opposed to pounds of pressure,turbo size in relation to turbo lag and its effect on performance.

Don.

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96 2500 4x4 5spd 3. 54 grs,#10 TST plate,AFC spring kit,16 cm turbo,CUSTOM 4" exhaust, (turbo to tail),K&N RE-0880 filter,TST guages,370HP injectors,3800 rpm governor spring kit, Mcleod dual disc clutch(street),305/70r16 Goodyear Wrangler MT tires

 

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Sorry about the 19cm, ment to say 9cm.