PWM cooling fan(s) control using ECM

[mikels]

Simple answer is, yes - you can control a PWM fan controller with GM E67 controller (or E38 or E40).

Wiring is fairly simple - just need to wire PWM output from controller (can find wiring mech's for Corvette online pretty easily).

Obviously calibration needs to be changed as well from what controller was delivered with. Crate engine is disrete output, and you need PWM. There are several variables that need to be changed to make this work properly (including PWM frequency).

Fan output duty cycle can then be calibrated based on these inputs:
-Engine coolant temp - from ECT sensor
-AC pressure (will need to add production pressure sensor and wire as well)
-Intake air temp - IAT sensor in MAF

You can also calibrate 'after run' on fan to keep fan running at lower level after hot shut-down to reduce heat soak.

HP Tuners allows access to all these variables.

Dave

Dave