An aux pump isn't up to the task, you'll need an honest to goodness I/C pump. An I/C pump will be 2 to 3 times larger with considerably more flow.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

some of you don't know about the canvas bags that were hung on cars that were traveling.The water stayed ice colde in the Arizona heat,car doing 60 mph and above.
I wonder could you imerse a intercooler in special made bag,and reap the benifits of cold water.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

canvas leaks some of the water to the skin of the bag. the rapid air movement caused evaporation, and evaporation removes heat, cooling the bag and it's contents. on a regular basis, this would require a LOT of water, and the bag would crystallize with minerals in weeks...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Go A/A and get yourself a big pump, and a HX35. Come to the dark side! You have plenty of spare parts

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

I'm turning over the pros and cons of AA or AW IC's myself. One thing I hear repeated almost without fail when speaking of the benefit of an A/W setup is less intake volume, and therefore, less lag.

Has anyone attempted to quantify how much extra lag you get with a given amount of volume? I propose that, even with a pretty large IC and too much plumbing, it's negligible in the worst possible circumstances and possibly non-existent under the best. The difference will be absolutely nothing like going from one size turbo to another.