i run a w2a i/c core from a st-205 gt4 celica with my 4agte in the AW11. the w2a set-up IMO is much more effective in a mid engined car as you dont quite get the air flow through a a2a i/c in a mid/rear engined car that you would with a front mounted a2a i/c on a front engined car.
another bonus of the w2a set-up is that the i/c core can be mounted in the engine bay which means less/shorter piping which equals less lag and crispier thottle responce than what is normaly associated with longer piping used for a2a i/c (especialy some front mounted ones).
all you need is a good pump (i use a Davies Craig EBP (Electric Booster Pump) and preferably a aluminium heat exchange mounted to the front of the car.
at the moment i run a a/c condensor as my heat exchanger (budget at the time was low
) though i have scored a used aluminium radiator off another car that i will cut to size and make some end tanks for, then my w2a i/c set-up will be working at its optimum.
i used 20mm OD aluminium pipes down the undersides of the car and heater hose to join them to the heat exchanger, pump and i/c core.
after very spirited driving you can really feel the difference between the outlet pipe from the turbo to the pipe from the i/c to the TB. i'll have to buy myself a air temp meter oneday.
Forum for every generation Toyota MR2. Including the AW11 and SW20.
not only that but you could tie it in with the intake system to get cooloer air to start with
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