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13 Though it's possible to run a turbo engine without an intercooler at lower boost levels (especially on carbureted applications that act as a form of intercooling), intercoolers (like this air-to-air unit) are a good idea. Heat is a byproduct of compression and any time you have boost from a turbo or supercharger, there will be an increase in intake air temperature. Hot air is bad for power and safety, as itincreases the likelihood of detonation. Intercoolers improve power and reduce the chance of harmful detonation.