Water/meth injection.
Don't waste the spray - put it into the motor.
It works and provides a result significantly better than that provided by cooling the outside of the intercooler.
I run an AEM kit, which is MAP-based.
I can get below ambient charge temps and instant, unfaltering detonation prevention in all ambient conditions - even this 115° Phoenix heat and 41 lbs/min of air - for the full duration of a tank of gas on just a 1/2 gallon of $1 washer fluid.
Instant power, too. Even without re-tuning for it, you will see a significant increase in torque.
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