Well the DCC FK35 is installed and after two days of running I can report that this unit is sooo far above and beyond nice I can't explain. Previously I was running a relay and toggle, the temps were ok so I only needed to activate that fan every so often...but still kind of a pain. However the DCC unit was installed with the 187 degree jumpers in place with the 'underdrive pulley' jumper as well. The results are the fan starting at 10% speed with ignition on (volt meter BARELY moves...very little draw, I'd estimate 10amps or less.)and runs that way untill the temp range is at or near 187. At 187 the fan begins to ramp up, and ramps up to control any increase in temp and maintains 187 (or under) no matter the driving situation or outside temp. The interior LED indicator shows the fan running less than max fan speed the majority of the time...even at idle in mid 90's and 60% humidity..and full speed is very limited if seen at all. Without the underdrive jumper the unit had a difficult time catching and recovering temps fast enough and temps did want to overshoot 10-15 degrees before comming back down..reasons for this has not been determined, but Brian did respond to my emails (within 10minutes) and gave me several possibles too look at. However with the unit functioning 'as is' I will leave the underdrive jumper installed and deal with the fan running 10% at all times simply because it controls and stabalizes temps SO well as it is now. I have NOT seen anything over 187 at any time at all with the underdrive jumper in wether it be idleing in the garage or driveway for 40minutes or driving stop and go.
Conclusion is...if you want an Efan..you should not hesitate to spend the $$ on this unit to control it...you can't hear the fan ramp, you can't see the volt gauge react...smooth is the best description.
Conclusion is...if you want an Efan..you should not hesitate to spend the $$ on this unit to control it...you can't hear the fan ramp, you can't see the volt gauge react...smooth is the best description.